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(parent: 9b31071) | patch
USB: ene_usb6250: fix DMA to the stack
authorAlan Stern <[email protected]>
Tue, 16 May 2017 15:47:29 +0000 (11:47 -0400)
committerGreg Kroah-Hartman <[email protected]>
Wed, 17 May 2017 09:27:40 +0000 (11:27 +0200)
commit628c2893d44876ddd11602400c70606ade62e129
tree7cd93437f41e713887fe43e2a1a4da4db68424aftree | snapshot
parent9b31071dd18af2078cd866e39718f51f89b31c89commit | diff
USB: ene_usb6250: fix DMA to the stack

The ene_usb6250 sub-driver in usb-storage does USB I/O to buffers on
the stack, which doesn't work with vmapped stacks.  This patch fixes
the problem by allocating a separate 512-byte buffer at probe time and
using it for all of the offending I/O operations.

Signed-off-by: Alan Stern <[email protected]>
Reported-and-tested-by: Andreas Hartmann <[email protected]>
CC: <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
drivers/usb/storage/ene_ub6250.c diff | blob | history
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