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authorAlan Stern <stern@rowland.harvard.edu>2010-07-14 11:03:46 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2010-08-10 14:35:40 -0700
commitffda080353979273e8aa69fc1e6134f20643ae56 (patch)
tree3d4981380afc2123e906a85948c20a299c4a52bf /drivers/watchdog/pcwd_pci.c
parentbccbefaae050186bed3bcc74b1fd1a9b8c6710b2 (diff)
downloadblackbird-op-linux-ffda080353979273e8aa69fc1e6134f20643ae56.tar.gz
blackbird-op-linux-ffda080353979273e8aa69fc1e6134f20643ae56.zip
USB: EHCI: add missing frame -> microframe conversion
This patch (as1407) fixes a bug in ehci-hcd's isochronous scheduler. All its calculations should be done in terms of microframes, but for full-speed devices, sched->span is stored in frames. It needs to be converted. This fix is liable to expose problems in other drivers. The old code would accept URBs that should not have been accepted, so drivers have had no reason to avoid submitting URBs that exceeded the maximum schedule length. In an attempt to partially compensate for this, the patch also adjusts the schedule length from a minimum of 256 frames up to a minimum of 512 frames. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> CC: David Brownell <david-b@pacbell.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/watchdog/pcwd_pci.c')
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