Alexandre Bounine 0193ed8225 rapidio/tsi721_dma: fix failure to obtain transaction descriptor ... This is a bug fix for the situation when function tsi721_desc_get() fails to obtain a free transaction descriptor. The bug usually results in a memory access crash dump when data transfer scatter-gather list has more entries than size of hardware buffer descriptors ring. This fix ensures that error is properly returned to a caller instead of an invalid entry. This patch is applicable to kernel versions starting from v3.5. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com> Cc: Stef van Os <stef.van.os@prodrive-technologies.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: <stable@vger.kernel.org> [3.5+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-07-30 17:16:13 -07:00
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Kconfig	rapidio/tsi721: convert to modular mport driver	2013-07-03 16:08:04 -07:00
Makefile	rapidio/tsi721: convert to modular mport driver	2013-07-03 16:08:04 -07:00
tsi721_dma.c	rapidio/tsi721_dma: fix failure to obtain transaction descriptor	2014-07-30 17:16:13 -07:00
tsi721.c	rapidio/tsi721: use pci_enable_msix_exact() instead of pci_enable_msix()	2014-06-06 16:08:13 -07:00
tsi721.h	drivers/rapidio/devices/tsi721_dma.c: optimize use of BDMA descriptors	2014-04-07 16:36:07 -07:00