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| author | Vivek Gautam <gautam.vivek@samsung.com> | 2013-05-13 15:53:37 +0530 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2013-06-12 22:22:51 +0200 |
| commit | f903a20d1fc0e99741da671095c6b9ac7c13c7ae (patch) | |
| tree | 3e156f8196aebb129123ab23df1cc9ce02ea99c0 | |
| parent | 4edcf0a3dfd3cfa6b6c99dd1c893b7c96aa52d12 (diff) | |
| download | u-boot-imx-f903a20d1fc0e99741da671095c6b9ac7c13c7ae.zip u-boot-imx-f903a20d1fc0e99741da671095c6b9ac7c13c7ae.tar.gz u-boot-imx-f903a20d1fc0e99741da671095c6b9ac7c13c7ae.tar.bz2 | |
usb: Use get_unaligned() in usb_endpoint_maxp() for wMaxPacketSize
Use unaligned access to fetch wMaxPacketSize in usb_endpoint_maxp()
api.
In its absence we see following data abort message:
==============================================================
data abort
MAYBE you should read doc/README.arm-unaligned-accesses
pc : [<bf794e24>] lr : [<bf794e1c>]
sp : bf37c7b0 ip : 0000002f fp : 00000000
r10: 00000000 r9 : 00000002 r8 : bf37fecc
r7 : 00000001 r6 : bf7d8931 r5 : bf7d891c r4 : bf7d8800
r3 : bf7d65b0 r2 : 00000002 r1 : bf7d65b4 r0 : 00000027
Flags: nZCv IRQs off FIQs off Mode SVC_32
Resetting CPU ...
resetting ...
==============================================================
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Ilya Yanok <ilya.yanok@cogentembedded.com>
Cc: Marek Vasut <marex@denx.de>
| -rw-r--r-- | include/linux/usb/ch9.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index d1d732c..bd48704 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -35,6 +35,7 @@ #include <linux/types.h> /* __u8 etc */ #include <asm/byteorder.h> /* le16_to_cpu */ +#include <asm/unaligned.h> /* get_unaligned() */ /*-------------------------------------------------------------------------*/ @@ -596,7 +597,7 @@ static inline int usb_endpoint_is_isoc_out( */ static inline int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd) { - return __le16_to_cpu(epd->wMaxPacketSize); + return __le16_to_cpu(get_unaligned(&epd->wMaxPacketSize)); } static inline int usb_endpoint_interrupt_type( |