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kernel-fxtec-pro1x/drivers/rapidio
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John Hubbard 0ce2f76e97 rapidio: fix an error in get_user_pages_fast() error handling 
commit ffca476a0a8d26de767cc41d62b8ca7f540ecfdd upstream.

In the case of get_user_pages_fast() returning fewer pages than
requested, rio_dma_transfer() does not quite do the right thing.  It
attempts to release all the pages that were requested, rather than just
the pages that were pinned.

Fix the error handling so that only the pages that were successfully
pinned are released.

Fixes: e8de370188 ("rapidio: add mport char device driver")
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Alexandre Bounine <alex.bou9@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200517235620.205225-2-jhubbard@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-27 17:37:43 +02:00
..
devices rapidio: fix an error in get_user_pages_fast() error handling 2020-05-27 17:37:43 +02:00
switches rapidio: constify rio_device_id 2017-11-17 16:10:03 -08:00
Kconfig rapidio: add RapidIO channelized messaging driver 2016-08-02 19:35:31 -04:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rio-access.c rapidio: remove global irq spinlocks from the subsystem 2017-10-03 17:54:24 -07:00
rio-driver.c rapidio: add shutdown notification for RapidIO devices 2016-03-22 15:36:02 -07:00
rio-scan.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
rio-sysfs.c rapidio: use is_visible() to hide switch-specific attributes 2017-03-17 15:10:49 +09:00
rio.c rapidio: move 12 EXPORT_SYMBOL_GPL() calls to function implementations 2018-02-06 18:32:46 -08:00
rio.h rapidio: use is_visible() to hide switch-specific attributes 2017-03-17 15:10:49 +09:00
rio_cm.c drivers/rapidio/rio_cm.c: fix potential oops in riocm_ch_listen() 2020-01-27 14:50:31 +01:00