[PATCH] sbp2: add read_capacity workaround for iPod
Apple decided to copy some USB stupidity over to FireWire.
The sector number returned by iPods from read_capacity is one too many.
This may cause I/O errors, especially if the kernel is configured for EFI
partition support. We use the same workaround as usb-storage but have to
check for different model IDs.
http://marc.theaimsgroup.com/?t=114233262300001
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=187409
Acknowledgements:
Diagnosis and therapy by Mathieu Chouquet-Stringer <ml2news@free.fr>,
additional data about affected and unaffected Apple hardware from
Vladimir Kotal, Sander De Graaf, Bryan Olmstead and Hugh Dixon.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/ieee1394/sbp2.h b/drivers/ieee1394/sbp2.h
index e40caf5..3af2710 100644
--- a/drivers/ieee1394/sbp2.h
+++ b/drivers/ieee1394/sbp2.h
@@ -238,6 +238,7 @@
#define SBP2_WORKAROUND_128K_MAX_TRANS 0x1
#define SBP2_WORKAROUND_INQUIRY_36 0x2
#define SBP2_WORKAROUND_MODE_SENSE_8 0x4
+#define SBP2_WORKAROUND_FIX_CAPACITY 0x8
/* This is the two dma types we use for cmd_dma below */
enum cmd_dma_types {