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authorSarah Sharp <sarah.a.sharp@linux.intel.com>2009-09-08 13:20:16 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2009-09-23 06:46:18 -0700
commit6682bb39e111b34290e25c4d275c5bcf8bbccbe1 (patch)
treeb98c9f32ac12fb8c7957d39fd2acc42f8f4ae47e /drivers/usb/core
parent624defa12f304b4d11eda309bc207fa5a1900d0f (diff)
USB: Fix SS endpoint companion descriptor parsing.
When there's a descriptor after the SuperSpeed endpoint companion descriptor, the previous code would have skipped over twice the length it was supposed to. This code fixes crashes seen with UASP devices (which have a UASP descriptor after the SS endpoint companion descriptor). Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core')
-rw-r--r--drivers/usb/core/config.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index a16c538d013..0d3af6a6ee4 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -105,7 +105,7 @@ static int usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
ep->ss_ep_comp->extralen = i;
buffer += i;
size -= i;
- retval = buffer - buffer_start + i;
+ retval = buffer - buffer_start;
if (num_skipped > 0)
dev_dbg(ddev, "skipped %d descriptor%s after %s\n",
num_skipped, plural(num_skipped),