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When picolcd is switched into bootloader mode (for FW flashing) make
sure not to try to dereference NULL-pointers of feature-devices during
unplug/unbind.
This fixes following BUG:
BUG: unable to handle kernel NULL pointer dereference at 00000298
IP: [<f811f56b>] picolcd_exit_framebuffer+0x1b/0x80 [hid_picolcd]
*pde = 00000000
Oops: 0000 [#1]
Modules linked in: hid_picolcd syscopyarea sysfillrect sysimgblt fb_sys_fops
CPU: 0 PID: 15 Comm: khubd Not tainted 3.11.0-rc7-00002-g50d62d4 #2
EIP: 0060:[<f811f56b>] EFLAGS: 00010292 CPU: 0
EIP is at picolcd_exit_framebuffer+0x1b/0x80 [hid_picolcd]
Call Trace:
[<f811d1ab>] picolcd_remove+0xcb/0x120 [hid_picolcd]
[<c1469b09>] hid_device_remove+0x59/0xc0
[<c13464ca>] __device_release_driver+0x5a/0xb0
[<c134653f>] device_release_driver+0x1f/0x30
[<c134603d>] bus_remove_device+0x9d/0xd0
[<c13439a5>] device_del+0xd5/0x150
[<c14696a4>] hid_destroy_device+0x24/0x60
[<c1474cbb>] usbhid_disconnect+0x1b/0x40
...
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Cc: stable@kernel.org
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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This allows the hid drivers to be independent from the transport layer.
The patch was constructed by replacing all occurences of
usbhid_submit_report() by its hid_hw_request() counterpart.
Then, drivers not requiring USB_HID anymore have their USB_HID
dependency cleaned in the Kconfig file.
Finally, few drivers still depends on USB_HID. Many of them
are requiring the io wait callback. They are found in the next patch.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
For the sensor-hub part:
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Commit c003ab1bedf0 ("[media] rc-core: add separate defines for
protocol bitmaps and numbers") overlooked hid-picolcd.
This patch (against git.linuxtv.org/media_tree.git, branch
staging/for_v3.8) fixes the compilation breakage.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Smatch complains that the NULL checking in this function is not
consistent and could lead to a NULL dereference. The comments say that
we should return here if rc_dev is NULL so I've changed the test to
match the comment.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Implement support for picoLCD's CIR header using RC_CORE for decoding
the IR event stream.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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In order to make code maintenance easier, split the vairous
functions into individial files (this removes a bunch of #ifdefs).
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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