aboutsummaryrefslogtreecommitdiffstats
path: root/drivers
Commit message (Collapse)AuthorAge
...
| | * | | | | | | | | | | | | | | | | | | | iwlwifi: do not send lq cmd when station add failsMeenakshi Venkataraman2012-05-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When adding a station fails in iwl_restore_stations, the driver treats it like a successful station add and sends a link quality command, when it it shouldn't. This patch fixes one of the potential sources for kernel warnings like this one: WARNING: at drivers/net/wireless/iwlwifi/iwl-agn-sta.c:905 iwl_send_lq_cmd+0x130/0x217 [iwlwifi]() Hardware name: 3323A2G Modules linked in: ... Pid: 17359, comm: kworker/u:2 Tainted: G O 3.3.0-wl+ #1 Call Trace: [<ffffffff81039620>] warn_slowpath_common+0x7e/0x96 [<ffffffff8103964d>] warn_slowpath_null+0x15/0x17 [<ffffffffa02a9f0b>] iwl_send_lq_cmd+0x130/0x217 [iwlwifi] [<ffffffffa02aa1fb>] iwl_restore_stations+0x209/0x289 [iwlwifi] [<ffffffffa02b07c2>] iwlagn_commit_rxon+0x602/0x7bd [iwlwifi] [<ffffffffa02b111f>] iwlagn_bss_info_changed+0x247/0x31a [iwlwifi] [<ffffffffa0861437>] ieee80211_bss_info_change_notify+0x1a5/0x1ba [mac80211] [<ffffffffa088afad>] ieee80211_destroy_auth_data+0x4b/0x70 [mac80211] [<ffffffffa088df26>] ieee80211_sta_work+0xb5/0x954 [mac80211] Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com> Reviewed-by: Wey-Yi W Guy <wey-yi.w.guy@intel.com> Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | | | | | | | | | | | | | | | | | | | iwlwifi: remove ucode16 optionJohannes Berg2012-05-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ucode16 option is still very much work in progress, so there's no need to ask any users about it. Remove the option and code for now, we'll put it back when it's actually working. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | | | | | | | | | | | | | | | | | | | iwlwifi: do not use shadow registers by defaultMeenakshi Venkataraman2012-05-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Shadow registers in the device are meant to allow the driver to update certain device registers without needing to wake up all components of the device. However, using this feature in the device causes communication between the driver and the device to become unreliable, resulting in host command timeouts. Disable this feature by default till a fix is available for the bug. Cc: stable@vger.kernel.org #2.6.38+ Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | | | | | | | | | | | | | | | | | | | iwlwifi: fix the Transmit Frame Descriptor ringsEmmanuel Grumbach2012-05-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The logic that allows to have a short TFD queue was completely wrong. We do maintain 256 Transmit Frame Descriptors, but they point to recycled buffers. We used to attach and de-attach different TFDs for the same buffer and it worked since they pointed to the same buffer. Also zero the number of BDs after unmapping a TFD. This seems not necessary since we don't reclaim the same TFD twice, but I like housekeeping. This patch solves this warning: [ 6427.079855] WARNING: at lib/dma-debug.c:866 check_unmap+0x727/0x7a0() [ 6427.079859] Hardware name: Latitude E6410 [ 6427.079865] iwlwifi 0000:02:00.0: DMA-API: device driver tries to free DMA memory it has not allocated [device address=0x00000000296d393c] [size=8 bytes] [ 6427.079870] Modules linked in: ... [ 6427.079950] Pid: 6613, comm: ifconfig Tainted: G O 3.3.3 #5 [ 6427.079954] Call Trace: [ 6427.079963] [<c10337a2>] warn_slowpath_common+0x72/0xa0 [ 6427.079982] [<c1033873>] warn_slowpath_fmt+0x33/0x40 [ 6427.079988] [<c12dcb77>] check_unmap+0x727/0x7a0 [ 6427.079995] [<c12dcdaa>] debug_dma_unmap_page+0x5a/0x80 [ 6427.080024] [<fe2312ac>] iwlagn_unmap_tfd+0x12c/0x180 [iwlwifi] [ 6427.080048] [<fe231349>] iwlagn_txq_free_tfd+0x49/0xb0 [iwlwifi] [ 6427.080071] [<fe228e37>] iwl_tx_queue_unmap+0x67/0x90 [iwlwifi] [ 6427.080095] [<fe22d221>] iwl_trans_pcie_stop_device+0x341/0x7b0 [iwlwifi] [ 6427.080113] [<fe204b0e>] iwl_down+0x17e/0x260 [iwlwifi] [ 6427.080132] [<fe20efec>] iwlagn_mac_stop+0x6c/0xf0 [iwlwifi] [ 6427.080168] [<fd8480ce>] ieee80211_stop_device+0x5e/0x190 [mac80211] [ 6427.080198] [<fd833208>] ieee80211_do_stop+0x288/0x620 [mac80211] [ 6427.080243] [<fd8335b7>] ieee80211_stop+0x17/0x20 [mac80211] [ 6427.080250] [<c148dac1>] __dev_close_many+0x81/0xd0 [ 6427.080270] [<c148db3d>] __dev_close+0x2d/0x50 [ 6427.080276] [<c148d152>] __dev_change_flags+0x82/0x150 [ 6427.080282] [<c148e3e3>] dev_change_flags+0x23/0x60 [ 6427.080289] [<c14f6320>] devinet_ioctl+0x6a0/0x770 [ 6427.080296] [<c14f8705>] inet_ioctl+0x95/0xb0 [ 6427.080304] [<c147a0f0>] sock_ioctl+0x70/0x270 Cc: stable@vger.kernel.org Reported-by: Antonio Quartulli <ordex@autistici.org> Tested-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Reviewed-by: Wey-Yi W Guy <wey-yi.w.guy@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | | | | | | | | | | | | | | | | | | | iwlwifi: update BT traffic load states correctlyMeenakshi Venkataraman2012-05-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When BT traffic load changes from its previous state, a new LQ command needs to be sent down to the firmware. This needs to be done only once per change. The state variable that keeps track of this change is last_bt_traffic_load. However, it was not being updated when the change had been handled. Not updating this variable was causing a flood of advanced BT config commands to be sent to the firmware. Fix this. Cc: stable@vger.kernel.org #2.6.38+ Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * | | | | | | | | | | | | | | | | | | | | r6040: Do a Proper deinit at errorpath and also when driver unloads (calling ↵Devendra Naga2012-05-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | r6040_remove_one) so if mdiobus_alloc fails, the errorpath doesnt do a netif_napi_del and also doesn't set the priv data of the driver to NULL. at the driver unload stage the driver doesn't remove the NAPI context, and doesnt' set the priv data to NULL, and also doesn't call the pci_iounmap. Signed-off-by: Devendra Naga <devendra.aaru@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | | | | | | | | | | | | | r6040: disable pci device if the subsequent calls (after pci_enable_device) ↵Devendra Naga2012-05-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fails the calls after the pci_enable_device may fail, and will error out with out disabling it. disable the device at error paths. Signed-off-by: Devendra Naga <devendra.aaru@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | | | | | | | | | | | | | net: sh_eth: fix the rxdesc pointer when rx descriptor empty happensYoshihiro Shimoda2012-05-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When Receive Descriptor Empty happens, rxdesc pointer of the driver and actual next descriptor of the controller may be mismatch. This patch fixes it. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | | | | | | | | | | | | | asix: allow full size 8021Q frames to be receivedEric Dumazet2012-05-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | asix driver drops 8021Q full size frames because it doesn't take into account VLAN header size. Tested on AX88772 adapter. Signed-off-by: Eric Dumazet <edumazet@google.com> CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org> CC: Allan Chou <allan@asix.com.tw> CC: Trond Wuellner <trond@chromium.org> CC: Grant Grundler <grundler@chromium.org> CC: Paul Stewart <pstew@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | | | | | | | | | | | | | xen/netback: Calculate the number of SKB slots required correctlySimon Graham2012-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When calculating the number of slots required for a packet header, the code was reserving too many slots if the header crossed a page boundary. Since netbk_gop_skb copies the header to the start of the page, the count of slots required for the header should be based solely on the header size. This problem is easy to reproduce if a VIF is bridged to a USB 3G modem device as the skb->data value always starts near the end of the first page. Signed-off-by: Simon Graham <simon.graham@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | | | | | | | | | | | | | solos-pci: Fix DMA supportDavid Woodhouse2012-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | DMA support has finally made its way to the top of the TODO list, having realised that a Geode using MMIO can't keep up with two ADSL2+ lines each running at 21Mb/s. This patch fixes a couple of bugs in the DMA support in the driver, so once the corresponding FPGA update is complete and tested everything should work properly. We weren't storing the currently-transmitting skb, so we were never unmapping it and never freeing/popping it when the TX was done. And the addition of pci_set_master() is fairly self-explanatory. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | | | | | | | | | | | | | net: qmi_wwan: Add Sierra Wireless device IDsBjørn Mork2012-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some additional Gobi3K IDs found in the BSD/GPL licensed out-of-tree GobiNet driver from Sierra Wireless. Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | | | | | | | | | | | | | | | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-clientLinus Torvalds2012-05-30
|\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ceph updates from Sage Weil: "There are some updates and cleanups to the CRUSH placement code, a bug fix with incremental maps, several cleanups and fixes from Josh Durgin in the RBD block device code, a series of cleanups and bug fixes from Alex Elder in the messenger code, and some miscellaneous bounds checking and gfp cleanups/fixes." Fix up trivial conflicts in net/ceph/{messenger.c,osdmap.c} due to the networking people preferring "unsigned int" over just "unsigned". * git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (45 commits) libceph: fix pg_temp updates libceph: avoid unregistering osd request when not registered ceph: add auth buf in prepare_write_connect() ceph: rename prepare_connect_authorizer() ceph: return pointer from prepare_connect_authorizer() ceph: use info returned by get_authorizer ceph: have get_authorizer methods return pointers ceph: ensure auth ops are defined before use ceph: messenger: reduce args to create_authorizer ceph: define ceph_auth_handshake type ceph: messenger: check return from get_authorizer ceph: messenger: rework prepare_connect_authorizer() ceph: messenger: check prepare_write_connect() result ceph: don't set WRITE_PENDING too early ceph: drop msgr argument from prepare_write_connect() ceph: messenger: send banner in process_connect() ceph: messenger: reset connection kvec caller libceph: don't reset kvec in prepare_write_banner() ceph: ignore preferred_osd field ceph: fully initialize new layout ...
| * | | | | | | | | | | | | | | | | | | | | | rbd: rename __rbd_update_snaps to __rbd_refresh_headerJosh Durgin2012-05-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This function rereads the entire header and handles any changes in it, not just changes in snapshots. Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com> Reviewed-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net>
| * | | | | | | | | | | | | | | | | | | | | | rbd: fix snapshot size typeJosh Durgin2012-05-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Snapshot sizes should be the same type as regular image sizes. This only affects their displayed size in sysfs, not the reported size of an actual block device sizes. Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com> Reviewed-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net>
| * | | | | | | | | | | | | | | | | | | | | | rbd: remove conditional snapid parametersJosh Durgin2012-05-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The snapid parameters passed to rbd_do_op() and rbd_req_sync_op() are now always either a valid snapid or an explicit CEPH_NOSNAP. [elder@dreamhost.com: Rephrased the description] Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com> Reviewed-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net>
| * | | | | | | | | | | | | | | | | | | | | | rbd: store snapshot id instead of indexJosh Durgin2012-05-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a device was open at a snapshot, and snapshots were deleted or added, data from the wrong snapshot could be read. Instead of assuming the snap context is constant, store the actual snap id when the device is initialized, and rely on the OSDs to signal an error if we try reading from a snapshot that was deleted. Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com> Reviewed-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net>
| * | | | | | | | | | | | | | | | | | | | | | rbd: protect read of snapshot sequence numberJosh Durgin2012-05-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is updated whenever a snapshot is added or deleted, and the snapc pointer is changed with every refresh of the header. Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com> Reviewed-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net>
| * | | | | | | | | | | | | | | | | | | | | | rbd: fix integer overflow in rbd_header_from_disk()Xi Wang2012-05-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ondisk->snap_count is read from disk via rbd_req_sync_read() and thus needs validation. Otherwise, a bogus `snap_count' could overflow the kmalloc() size, leading to memory corruption. Also use `u32' consistently for `snap_count'. [elder@dreamhost.com: changed to use UINT_MAX rather than ULONG_MAX] Signed-off-by: Xi Wang <xi.wang@gmail.com> Reviewed-by: Alex Elder <elder@dreamhost.com>
| * | | | | | | | | | | | | | | | | | | | | | rbd: use gfp_flags parameter in rbd_header_from_disk()Dan Carpenter2012-05-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We should use the gfp_flags that the caller specified instead of GFP_KERNEL here. There is only one caller and it uses GFP_KERNEL, so this change is just a cleanup and doesn't change how the code works. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Alex Elder <elder@dreamhost.com>
| * | | | | | | | | | | | | | | | | | | | | | ceph: drop support for preferred_osd pgsSage Weil2012-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This was an ill-conceived feature that has been removed from Ceph. Do this gracefully: - reject attempts to specify a preferred_osd via the ioctl - stop exposing this information via virtual xattrs - always fill in -1 for requests, in case we talk to an older server - don't calculate preferred_osd placements/pgids Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
| * | | | | | | | | | | | | | | | | | | | | | rbd: don't hold spinlock during messenger flushAlex Elder2012-04-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A recent change made changes to the rbd_client_list be protected by a spinlock. Unfortunately in rbd_put_client(), the lock is taken before possibly dropping the last reference to an rbd_client, and on the last reference that eventually calls flush_workqueue() which can sleep. The problem was flagged by a debug spinlock warning: BUG: spinlock wrong CPU on CPU#3, rbd/27814 The solution is to move the spinlock acquisition and release inside rbd_client_release(), which is the spot where it's really needed for protecting the removal of the rbd_client from the client list. Signed-off-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Sage Weil <sage@newdream.net>
* | | | | | | | | | | | | | | | | | | | | | | Merge branch 'i2c-for-linus' of ↵Linus Torvalds2012-05-30
|\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging Pull i2c updates from Jean Delvare. * 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: i2c: Split I2C_M_NOSTART support out of I2C_FUNC_PROTOCOL_MANGLING i2c-dev: Add support for I2C_M_RECV_LEN
| * | | | | | | | | | | | | | | | | | | | | | | i2c: Split I2C_M_NOSTART support out of I2C_FUNC_PROTOCOL_MANGLINGMark Brown2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since there are uses for I2C_M_NOSTART which are much more sensible and standard than most of the protocol mangling functionality (the main one being gather writes to devices where something like a register address needs to be inserted before a block of data) create a new I2C_FUNC_NOSTART for this feature and update all the users to use it. Also strengthen the disrecommendation of the protocol mangling while we're at it. In the case of regmap-i2c we remove the requirement for mangling as I2C_M_NOSTART is the only mangling feature which is being used. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
| * | | | | | | | | | | | | | | | | | | | | | | i2c-dev: Add support for I2C_M_RECV_LENJean Delvare2012-05-30
| | |_|_|_|_|/ / / / / / / / / / / / / / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As the bus driver side implementation of I2C_M_RECV_LEN is heavily tied to SMBus, we can't support received length over 32 bytes, but let's at least support that. In practice, the caller will have to setup a buffer large enough to cover the case where received length byte has value 32, so minimum 32 + 1 = 33 bytes, possibly more if there is a fixed number of bytes added for the specific slave (for example a checksum.) Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Douglas Gilbert <dgilbert@interlog.com>
* | | | | | | | | | | | | | | | | | | | | | | Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds2012-05-30
|\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull second set of watchdog updates from Wim Van Sebroeck: "This changeset contains following changes: * Add support for multiple watchdog devices. We use dynamically allocated device id's for this. * Add locking into the generic watchdog infrastructure. * Add support for dynamically allocated watchdog_device structs so that we can deal with devices that get unbound. * convert following drivers to the generic watchdog framework: sch5627, sch5636 and sp805_wdt. * Add DA9052/53 PMIC watchdog support * Fix printk format warnings for iTCO_wdt.c" * git://www.linux-watchdog.org/linux-watchdog: watchdog: iTCO_wdt.c: fix printk format warnings watchdog: sp805_wdt: Add clk_{un}prepare support watchdog: sp805_wdt: convert to watchdog core hwmon/sch56xx: Depend on watchdog for watchdog core functions watchdog: sch56xx-common: set correct bits in register() Watchdog: DA9052/53 PMIC watchdog support watchdog: sch56xx-common: Add proper ref-counting of watchdog data watchdog: sch56xx: Remove unnecessary checks for register changes watchdog: sch56xx: Use watchdog core watchdog: Add support for dynamically allocated watchdog_device structs watchdog: Add Locking support watchdog: watchdog_dev: Rewrite wrapper code watchdog: use dev_ functions watchdog: create all the proper device files watchdog: Add a flag to indicate the watchdog doesn't reboot things watchdog: Add multiple device support watchdog: watchdog_core.h: make functions extern watchdog: correct the name of the watchdog_core inlude file watchdog: Add watchdog_active() routine watchdog: watchdog_dev: include private header to pickup global symbol prototypes
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: iTCO_wdt.c: fix printk format warningsRandy Dunlap2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix printk format warnings: drivers/watchdog/iTCO_wdt.c:577:3: warning: format '%04llx' expects type 'long long unsigned int', but argument 2 has type 'resource_size_t' drivers/watchdog/iTCO_wdt.c:594:3: warning: format '%04llx' expects type 'long long unsigned int', but argument 2 has type 'resource_size_t' drivers/watchdog/iTCO_wdt.c:600:2: warning: format '%04llx' expects type 'long long unsigned int', but argument 4 has type 'resource_size_t' Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: sp805_wdt: Add clk_{un}prepare supportViresh Kumar2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | clk_{un}prepare() routines are required for required on some platforms to run part of clk enable/disable() routines from contexts that can schedule. This patch adds support for these routines in sp805 driver. Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: sp805_wdt: convert to watchdog coreViresh Kumar2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts existing sp805 watchdog driver to use already in place common infrastructure present in watchdog core. With this lot of code goes away. Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | hwmon/sch56xx: Depend on watchdog for watchdog core functionsHans de Goede2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the watchdog code in sch56xx-common now uses the watchdog core, the Kconfig entires for the sch5627 and sch5636 should depend on WATCHDOG being set. Also select the watchdog core when we select one of the drivers. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: sch56xx-common: set correct bits in register()Dan Carpenter2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | WDOG_NO_WAY_OUT (3) and WDOG_ACTIVE (0) are the bit numbers, not a mask. So "data->wddev.status |= WDOG_ACTIVE;" was intended to set bit zero but it is a no-op. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | Watchdog: DA9052/53 PMIC watchdog supportAshish Jangam2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver adds support for the watchdog functionality provided by the Dialog Semiconductor DA9052 PMIC chip. Tested on samsung smdkv6410 and i.mx53 QS boards. Signed-off-by: Anthony Olech <Anthony.Olech@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: sch56xx-common: Add proper ref-counting of watchdog dataHans de Goede2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes referencing free-ed memory in the corner case where /dev/watchdog is open when the platform driver gets unbound from the platform device. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: sch56xx: Remove unnecessary checks for register changesHans de Goede2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the watchdog core keeps track of the watchdog's active state, start/stop will never get called when no changes are necessary. So we can remove the check for the output_enable register changing before writing it (which is an expensive operation). Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: sch56xx: Use watchdog coreHans de Goede2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert sch56xx drivers to the generic watchdog core. Note this patch depends on the "watchdog: Add multiple device support" patch from Alan Cox. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: Add support for dynamically allocated watchdog_device structsHans de Goede2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a driver's watchdog_device struct is part of a dynamically allocated struct (which it often will be), merely locking the module is not enough, even with a drivers module locked, the driver can be unbound from the device, examples: 1) The root user can unbind it through sysfd 2) The i2c bus master driver being unloaded for an i2c watchdog I will gladly admit that these are corner cases, but we still need to handle them correctly. The fix for this consists of 2 parts: 1) Add ref / unref operations, so that the driver can refcount the struct holding the watchdog_device struct and delay freeing it until any open filehandles referring to it are closed 2) Most driver operations will do IO on the device and the driver should not do any IO on the device after it has been unbound. Rather then letting each driver deal with this internally, it is better to ensure at the watchdog core level that no operations (other then unref) will get called after the driver has called watchdog_unregister_device(). This actually is the bulk of this patch. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: Add Locking supportHans de Goede2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes some potential multithreading issues, despite only allowing one process to open the /dev/watchdog device, we can still get called multiple times at the same time, since a program could be using thread, or could share the fd after a fork. This causes 2 potential problems: 1) watchdog_start / open do an unlocked test_n_set / test_n_clear, if these 2 race, the watchdog could be stopped while the active bit indicates it is running or visa versa. 2) Most watchdog_dev drivers probably assume that only one watchdog-op will get called at a time, this is not necessary true atm. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: watchdog_dev: Rewrite wrapper codeHans de Goede2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rewrite and extend the wrapper code so that we can easily introduce locking (this to be able to prevent potential multithreading issues). Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: use dev_ functionsAlan Cox2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While they are registered all our watchdogs now have a valid device object so we can in turn use that to report problems nicely. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: create all the proper device filesAlan Cox2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Create the watchdog class and it's associated devices. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: Add multiple device supportAlan Cox2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We keep the old /dev/watchdog interface file for the first watchdog via miscdev. This is basically a cut and paste of the relevant interface code from the rtc driver layer tweaked for watchdog. Revised to fix problems noted by Hans de Goede Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: watchdog_core.h: make functions externWim Van Sebroeck2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the functions in watchdog_core.h extern like it should. Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: correct the name of the watchdog_core inlude fileWim Van Sebroeck2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The watchdog_core include file should have been named watchdog_core.h and not watchdog_dev.h . Correct this. Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: Add watchdog_active() routineViresh Kumar2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some watchdog may need to check if watchdog is ACTIVE or not, for example in their suspend/resume hooks. This patch adds this routine and changes the core drivers to use it. Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | | | | | | | | | | | | | | watchdog: watchdog_dev: include private header to pickup global symbol ↵H Hartley Sweeten2012-05-30
| |/ / / / / / / / / / / / / / / / / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | prototypes Include the private watchdog_dev.h header to pickup the prototypes for the watchdog_dev_register/unregister functions. This quiets the following sparse warnings: warning: symbol 'watchdog_dev_register' was not declared. Should it be static? warning: symbol 'watchdog_dev_unregister' was not declared. Should it be static? Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* | | | | | | | | | | | | | | | | | | | | | | Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds2012-05-30
|\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ | | |_|_|_|_|_|_|_|_|_|_|/ / / / / / / / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull drm fixes from Dave Airlie: "Just regular fixes, bunch from intel, quieting some of the over zealous power warnings, and the rest just misc. I've got another pull with the remaining dma-buf bits, since the vmap bits are in your tree now. I'll send tomorrow just to space things out a bit." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (22 commits) drm/edid/quirks: ViewSonic VA2026w drm/udl: remove unused variables. drm/radeon: fix XFX quirk drm: Use stdint types for consistency drm: Constify params to format_check() and framebuffer_checks() drm/radeon: fix typo in trinity tiling setup drm/udl: unlock before returning in udl_gem_mmap() radeon: make radeon_cs_update_pages static. drm/i915: tune down the noise of the RP irq limit fail drm/i915: Remove the error message for unbinding pinned buffers drm/i915: Limit page allocations to lowmem (dma32) for i965 drm/i915: always use RPNSWREQ for turbo change requests drm/i915: reject doubleclocked cea modes on dp drm/i915: Adding TV Out Missing modes. drm/i915: wait for a vblank to pass after tv detect drm/i915: no lvds quirk for HP t5740e Thin Client drm/i915: enable vdd when switching off the eDP panel drm/i915: Fix PCH PLL assertions to not assume CRTC:PLL relationship drm/i915: Always update RPS interrupts thresholds along with frequency drm/i915: properly handle interlaced bit for sdvo dtd conversion ...
| * | | | | | | | | | | | | | | | | | | | | | drm/edid/quirks: ViewSonic VA2026wAdam Jackson2012-05-29
| | |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Entirely new class of fail for this one. The detailed timings are for normal CVT but the monitor really wanted CVT-R. Bugzilla: http://bugzilla.redhat/com/516471 Signed-off-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
| * | | | | | | | | | | | | | | | | | | | | drm/udl: remove unused variables.Dave Airlie2012-05-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These two variables were not required after new API was introduced. Signed-off-by: Dave Airlie <airlied@redhat.com>
| * | | | | | | | | | | | | | | | | | | | | Merge branch 'drm-intel-fixes' of ↵Dave Airlie2012-05-29
| |\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://people.freedesktop.org/~danvet/drm-intel into drm-fixes * 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: drm/i915: tune down the noise of the RP irq limit fail drm/i915: Remove the error message for unbinding pinned buffers drm/i915: Limit page allocations to lowmem (dma32) for i965 drm/i915: always use RPNSWREQ for turbo change requests drm/i915: reject doubleclocked cea modes on dp drm/i915: Adding TV Out Missing modes. drm/i915: wait for a vblank to pass after tv detect drm/i915: no lvds quirk for HP t5740e Thin Client drm/i915: enable vdd when switching off the eDP panel drm/i915: Fix PCH PLL assertions to not assume CRTC:PLL relationship drm/i915: Always update RPS interrupts thresholds along with frequency drm/i915: properly handle interlaced bit for sdvo dtd conversion drm/i915: fix module unload since error_state rework drm/i915: be more careful when returning -ENXIO in gmbus transfer
| | * | | | | | | | | | | | | | | | | | | | | drm/i915: tune down the noise of the RP irq limit failDaniel Vetter2012-05-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We still don't understand why this fails exactly, but if fails way too often for a simple debug information. Furthermore the current ducttape should prevent the gpu from getting stuck at low frequencies. Hence tune down the dmesg noise. Note that the known failure case is that the register read returns 0 when the gpu gets confused. v2: Add comments about the known failure case. Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>