diff options
| author | David Brownell <david-b@pacbell.net> | 2007-05-26 07:40:14 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-06-09 03:24:30 +0400 |
| commit | 01ee7d7032204b383b2fba73021e7acbc776184b (patch) | |
| tree | 2a5681e94df6ee18287a962394e9e8565e27f5bc /drivers/usb/gadget/epautoconf.c | |
| parent | 97cb95d1c4b724bc3bedd16dd022fbd3c2d61283 (diff) | |
| download | linux-01ee7d7032204b383b2fba73021e7acbc776184b.tar.xz | |
USB: usb gadgets avoid le{16,32}_to_cpup()
It turns out that le16_to_cpup() and le32_to_cpup() aren't always safe
to call with pointers into packed structures, since those are inlined
functions and GCC may lose the "packed" attribute. So those references
can become unaligned kernel accesses, which are evil on some hardware.
This patch updates uses of those routines in the gadget stack. The
references into packed structures can just use leXX_to_cpu(*x), which
in most cases is more natural. Some other uses in RNDIS, mostly in
debug code, were wrong in the first place; those use get_unaligned().
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/epautoconf.c')
| -rw-r--r-- | drivers/usb/gadget/epautoconf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c index f28af06905a5..6042364402b8 100644 --- a/drivers/usb/gadget/epautoconf.c +++ b/drivers/usb/gadget/epautoconf.c @@ -132,7 +132,7 @@ ep_matches ( * where it's an output parameter representing the full speed limit. * the usb spec fixes high speed bulk maxpacket at 512 bytes. */ - max = 0x7ff & le16_to_cpup (&desc->wMaxPacketSize); + max = 0x7ff & le16_to_cpu(desc->wMaxPacketSize); switch (type) { case USB_ENDPOINT_XFER_INT: /* INT: limit 64 bytes full speed, 1024 high speed */ |