b37c4a2baa
while playing with dfu, I tapped in an unaligned access
when doing on the host side a "lsusb -d [vendornr]: -v"
I get on the board:
GADGET DRIVER: usb_dnl_dfu
data abort
MAYBE you should read doc/README.arm-unaligned-accesses
pc : [<8ff71db8>] lr : [<8ff75aec>]
sp : 8ef40d18 ip : 00000005 fp : 00000000
r10: 00000000 r9 : 47401410 r8 : 8ef40f38
r7 : 8ef4aae8 r6 : 0000000a r5 : 8ef4ab28 r4 : 8ef4ab80
r3 : 0000000a r2 : 00000006 r1 : 00000006 r0 : 8ef4aae8
Flags: Nzcv IRQs off FIQs on Mode SVC_32
Resetting CPU ...
reason is that in the "struct usb_composite_dev" the
"struct usb_device_descriptor desc;" is on an odd address,
and this struct gets accessed in
drivers/usb/gadget/composite.c device_qual()
Fix it, by align this var "struct desc" fix to an aligned
address.
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Samuel Egli <samuel.egli@siemens.com>
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|---|---|---|
| .. | ||
| byteorder | ||
| mtd | ||
| unaligned | ||
| usb | ||
| apm_bios.h | ||
| bch.h | ||
| bitops.h | ||
| bitrev.h | ||
| compat.h | ||
| compiler-gcc.h | ||
| compiler-gcc3.h | ||
| compiler-gcc4.h | ||
| compiler.h | ||
| config.h | ||
| crc7.h | ||
| crc32.h | ||
| ctype.h | ||
| edd.h | ||
| err.h | ||
| ethtool.h | ||
| fb.h | ||
| input.h | ||
| ioctl.h | ||
| ioport.h | ||
| kbuild.h | ||
| linkage.h | ||
| linux_string.h | ||
| list.h | ||
| lzo.h | ||
| math64.h | ||
| mc146818rtc.h | ||
| mdio.h | ||
| mii.h | ||
| netdevice.h | ||
| poison.h | ||
| posix_types.h | ||
| rbtree.h | ||
| screen_info.h | ||
| stat.h | ||
| stddef.h | ||
| string.h | ||
| stringify.h | ||
| time.h | ||
| types.h | ||