linux-stable/drivers/dma/ti
Kishon Vijay Abraham I c4cd9e5acc dmaengine: ti: k3-udma: Set r/tchan or rflow to NULL if request fail
commit eb91224e47 upstream.

udma_get_*() checks if rchan/tchan/rflow is already allocated by checking
if it has a NON NULL value. For the error cases, rchan/tchan/rflow will
have error value and udma_get_*() considers this as already allocated
(PASS) since the error values are NON NULL. This results in NULL pointer
dereference error while de-referencing rchan/tchan/rflow.

Reset the value of rchan/tchan/rflow to NULL if a channel request fails.

CC: stable@vger.kernel.org
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Link: https://lore.kernel.org/r/20211031032411.27235-3-kishon@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-18 19:17:16 +01:00
..
cppi41.c dmaengine: cppi41: Fix cppi41_dma_prep_slave_sg() when idle 2019-10-23 21:15:21 +05:30
dma-crossbar.c dmaengine: ti: drop of_match_ptr and mark of_device_id table as maybe unused 2020-11-24 23:02:20 +05:30
edma.c dmaengine: Replace zero-length array with flexible-array 2020-06-15 23:08:30 -05:00
k3-psil-am64.c dmaengine: ti: k3-psil: Add initial map for AM64 2020-12-11 21:20:09 +05:30
k3-psil-am654.c dmaengine: ti: k3-psil: make symbols static 2020-01-21 13:10:24 +05:30
k3-psil-j721e.c dmaengine: ti: k3-psil-j721e: Add entry for CSI2RX 2021-08-29 19:14:19 +05:30
k3-psil-j7200.c dmaengine: ti: k3-psil: add map for j7200 2020-08-17 10:50:31 +05:30
k3-psil-priv.h dmaengine: ti: k3-psil: Add initial map for AM64 2020-12-11 21:20:09 +05:30
k3-psil.c dmaengine: ti: k3-psil: Add initial map for AM64 2020-12-11 21:20:09 +05:30
k3-udma-glue.c dmaengine: ti: k3-udma-glue: Add support for K3 PKTDMA 2020-12-11 21:20:10 +05:30
k3-udma-private.c dmaengine updates for v5.11-rc1 2020-12-17 12:52:23 -08:00
k3-udma.c dmaengine: ti: k3-udma: Set r/tchan or rflow to NULL if request fail 2021-11-18 19:17:16 +01:00
k3-udma.h dmaengine: ti: k3-udma-glue: Add support for K3 PKTDMA 2020-12-11 21:20:10 +05:30
Kconfig dmaengine: ti: k3-udma: Drop COMPILE_TEST for the drivers for now 2020-04-15 21:25:25 +05:30
Makefile dmaengine: ti: k3-psil: Add initial map for AM64 2020-12-11 21:20:09 +05:30
omap-dma.c dmaengine: ti: omap-dma: Skip pointless cpu_pm context restore on errors 2021-05-31 10:01:53 +05:30