Merge tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394

Pull IEEE 1394 (FireWire) subsystem updates from Stefan Richter:

 - Fix mismatch between DMA mapping direction (was wrong) and DMA
   synchronization direction (was correct) of isochronous reception
   buffers of userspace drivers if vma-mapped for R/W access.  For
   example, libdc1394 was affected.

 - more consistent retry stategy in device discovery/ rediscovery, and
   improved failure diagnostics

 - various small cleanups, e.g. use SCSI layer's DMA mapping API in
   firewire-sbp2

* tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
  firewire: sbp2: document the absence of alignment requirements
  firewire: sbp2: remove superfluous blk_queue_max_segment_size() call
  firewire: sbp2: use scsi_dma_(un)map
  firewire: sbp2: give correct DMA device to scsi framework
  firewire: core: fw_device_refresh(): clean up error handling
  firewire: core: log config rom reading errors
  firewire: core: log error in case of failed bus manager lock
  firewire: move rcode_string() to core
  firewire: core: improve reread_config_rom() interface
  firewire: core: wait for inaccessible devices after bus reset
  firewire: ohci: omit spinlock IRQ flags where possible
  firewire: ohci: correct signedness of a local variable
  firewire: core: fix DMA mapping direction
  firewire: use module_pci_driver

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/firewire.h b/include/linux/firewire.h
index e83c24af358a..7edcf1031718 100644
--- a/include/linux/firewire.h
+++ b/include/linux/firewire.h
@@ -349,6 +349,7 @@ int fw_cancel_transaction(struct fw_card *card,
 int fw_run_transaction(struct fw_card *card, int tcode, int destination_id,
                        int generation, int speed, unsigned long long offset,
                        void *payload, size_t length);
+const char *fw_rcode_string(int rcode);
 
 static inline int fw_stream_packet_destination_id(int tag, int channel, int sy)
 {
@@ -406,6 +407,7 @@ struct fw_iso_buffer {
         enum dma_data_direction direction;
         struct page **pages;
         int page_count;
+        int page_count_mapped;
 };
 
 int fw_iso_buffer_init(struct fw_iso_buffer *buffer, struct fw_card *card,