From: Kevin Daughtridge Date: Thu, 20 Sep 2012 19:00:32 +0000 (-0700) Subject: HID: keep dev_rdesc unmodified and use it for comparisons X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~104^2~1^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=86e6b77eb7cf9ca2e9c7092b4dfd588f0a3307b6;p=pandora-kernel.git HID: keep dev_rdesc unmodified and use it for comparisons The dev_rdesc member of the hid_device structure is meant to store the original report descriptor received from the device, but it is currently passed to any report_fixup method before it is copied to the rdesc member. This patch uses a temporary buffer to shield dev_rdesc from the side effects of many HID drivers' report_fixup implementations. usbhid's hid_post_reset checks the report descriptor currently returned by the device against a descriptor that may have been modified by a driver's report_fixup method. That leaves some devices nonfunctional after a resume, with a "reset_resume error 1" reported. This patch checks the new descriptor against the unmodified dev_rdesc instead and uses the original, instead of modified, report size. BugLink: http://bugs.launchpad.net/bugs/1049623 Signed-off-by: Kevin Daughtridge Signed-off-by: Jiri Kosina --- Reading git-diff-tree failed