Stanimir Varbanov f139f97878 dmaengine: qcom: bam_dma: fix dma free memory on remove ...

Building the driver as a module and when removing the already
inserted module gives below:

[ 1389.392788] Unable to handle kernel paging request at virtual address ffffffbdc000001c
[ 1389.421321] pgd = ffffffc02fa87000
[ 1389.447899] [ffffffbdc000001c] *pgd=0000000000000000, *pud=0000000000000000
[ 1389.460142] Internal error: Oops: 96000006 [#1] PREEMPT SMP
[ 1389.466963] Modules linked in: qcom_bam_dma(-)
[ 1389.486608] CPU: 2 PID: 2442 Comm: rmmod Not tainted 4.2.0+ #407
[ 1389.493885] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT)
[ 1389.501196] task: ffffffc035bae2c0 ti: ffffffc0368a8000 task.ti: ffffffc0368a8000
[ 1389.508566] PC is at __free_pages+0xc/0x40
[ 1389.515893] LR is at free_pages.part.93+0x30/0x38
[ 1389.523141] pc : [<ffffffc00016180c>] lr : [<ffffffc00016197c>] pstate: 80000145
[ 1389.530602] sp : ffffffc0368abc20
[ 1389.537931] x29: ffffffc0368abc20 x28: ffffffc0368a8000
[ 1389.549153] x27: 0000000000000000 x26: 0000000000000000
[ 1389.560412] x25: ffffffc000cb2000 x24: 0000000000000170
[ 1389.571530] x23: 0000000000000004 x22: ffffffc036bc5010
[ 1389.582721] x21: ffffffc036bc5010 x20: 0000000000000000
[ 1389.593981] x19: 0000000000000002 x18: 0000007fcbc8e8b0
[ 1389.605301] x17: 0000007f9b8226ec x16: ffffffc0002089e8
[ 1389.616647] x15: 0000007f9b8a0588 x14: 0ffffffffffffffc
[ 1389.628039] x13: 0000000000000030 x12: 0000000000000000
[ 1389.639436] x11: 0000000000000008 x10: ffffffc000ecc000
[ 1389.650872] x9 : ffffffc035bae2c0 x8 : ffffffc035bae9a8
[ 1389.662367] x7 : ffffffc035bae9a0 x6 : 0000000000000000
[ 1389.673906] x5 : ffffffbdc000001c x4 : 0000000080000000
[ 1389.685475] x3 : ffffffbdc0000000 x2 : 0000004080000000
[ 1389.697049] x1 : 0000000000000003 x0 : ffffffbdc0000000

The memory has been already freed by bam_free_chan() so fix this
by skiping already freed memory.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Reviewed-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

2016-04-19 21:11:31 +05:30

..

bestcomm

dmaengine: constify of_device_id array

2015-03-18 22:13:14 +05:30

dw

dmaengine updates for 4.6

2016-03-17 12:34:54 -07:00

hsu

dmaengine: hsu: speed up residue calculation

2015-12-05 14:00:34 +05:30

ioat

dmaengine updates for 4.6

2016-03-17 12:34:54 -07:00

ipu

genirq: Remove irq argument from irq flow handlers

2015-09-16 15:47:51 +02:00

ppc4xx

dmaengine: Remove FSF mailing addresses

2015-03-16 22:28:15 +05:30

qcom

dmaengine: qcom: bam_dma: fix dma free memory on remove

2016-04-19 21:11:31 +05:30

sh

dmaengine: rcar-dmac: clear pertinence number of channels

2016-03-03 21:51:14 +05:30

xilinx

dmaengine: xilinx_vdma: Remove unnecessary variable initializations

2016-03-04 20:33:13 +05:30

acpi-dma.c

dmaengine: acpi-dma: align debug message with flow

2016-02-22 09:06:09 +05:30

amba-pl08x.c

dmaengine: pl08x: support dt channel assignment

2015-08-18 22:12:14 +05:30

at_hdmac_regs.h

dmaengine: at_hdmac: use %pad format string for dma_addr_t

2015-11-16 09:21:05 +05:30

at_hdmac.c

dmaengine: at_hdmac: use %pad format string for dma_addr_t

2015-11-16 09:21:05 +05:30

at_xdmac.c

dmaengine: at_xdmac: fix residue computation

2016-03-10 16:32:36 +05:30

bcm2835-dma.c

dmaengine: bcm2835-dma: Convert to use DMA pool

2015-12-05 15:36:32 +05:30

coh901318_lli.c

…

coh901318.c

dmaengine: Add an enum for the dmaengine alignment constraints

2015-08-05 10:53:52 +05:30

coh901318.h

…

cppi41.c

dmaengine: cppi41: add missing bitfields

2015-04-11 21:12:58 +05:30

dma-axi-dmac.c

dmaengine: axi_dmac: Add synchronization support

2015-11-16 08:28:52 +05:30

dma-jz4740.c

Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma

2015-04-24 09:49:37 -07:00

dma-jz4780.c

dmaengine: jz4780: Kill tasklets before unregistering the device

2015-08-18 22:28:50 +05:30

dmaengine.c

dmaengine: core: expose max burst capability to clients

2016-02-09 09:01:41 +05:30

dmaengine.h

…

dmatest.c

kernel/params: constify struct kernel_param_ops uses

2015-05-28 11:32:10 +09:30

edma.c

dmaengine updates for 4.6

2016-03-17 12:34:54 -07:00

ep93xx_dma.c

dmaengine: ep93xx: Treat STALL and NFB IRQs same way

2016-01-25 09:49:55 +05:30

fsl_raid.c

dmaengine: fsl_raid: statify fsl_re_chan_probe

2015-04-02 16:11:35 +05:30

fsl_raid.h

dmaengine: Driver support for FSL RaidEngine device.

2015-04-02 16:10:27 +05:30

fsl-edma.c

dmaengine: fsl-edma: add PM suspend/resume support

2015-12-05 15:52:13 +05:30

fsldma.c

dmaengine: fsldma: fix memory leak

2016-03-09 12:15:22 +05:30

fsldma.h

dmaengine: fsldma: declare slave capabilities for the generic code

2015-01-13 23:58:08 +05:30

idma64.c

dmaengine: idma64: clear LLP_[SD]_EN bits in last descriptor

2016-02-15 22:06:45 +05:30

idma64.h

asm-generic changes for 4.6

2016-03-24 23:13:48 -07:00

img-mdc-dma.c

dmaengine: mdc: Correct terminate_all handling

2015-12-18 11:12:29 +05:30

imx-dma.c

dmaengine: Add an enum for the dmaengine alignment constraints

2015-08-05 10:53:52 +05:30

imx-sdma.c

dmaengine: imx-sdma: remove __init annotation on sdma_event_remap

2015-11-16 09:14:25 +05:30

iop-adma.c

dma, mm/pat: Rename dma_*_writecombine() to dma_*_wc()

2016-03-09 14:57:51 +01:00

k3dma.c

dmaengine: Add an enum for the dmaengine alignment constraints

2015-08-05 10:53:52 +05:30

Kconfig

Merge branch 'topic/qcom' into for-linus

2016-03-14 11:18:22 +05:30

lpc18xx-dmamux.c

dmaengine: add driver for lpc18xx dmamux

2015-08-18 22:12:14 +05:30

Makefile

dmaengine: qcom_bam_dma: move to qcom directory

2016-03-11 07:42:06 +05:30

mic_x100_dma.c

dma/mic_x100_dma: IS_ERR() vs PTR_ERR() typo

2016-03-03 21:13:01 +05:30

mic_x100_dma.h

dmaengine: Add an enum for the dmaengine alignment constraints

2015-08-05 10:53:52 +05:30

mmp_pdma.c

dmaengine: Add an enum for the dmaengine alignment constraints

2015-08-05 10:53:52 +05:30

mmp_tdma.c

dmaengine: Add an enum for the dmaengine alignment constraints

2015-08-05 10:53:52 +05:30

moxart-dma.c

dmaengine: moxart-dma: Fix module autoload for OF platform driver

2015-10-01 07:34:31 +05:30

mpc512x_dma.c

dmaengine: mpc512x: Fix module autoload for OF platform driver

2015-10-01 07:34:31 +05:30

mv_xor.c

dma, mm/pat: Rename dma_*_writecombine() to dma_*_wc()

2016-03-09 14:57:51 +01:00

mv_xor.h

dmaengine: mv_xor: add suspend/resume support

2016-01-06 15:42:27 +05:30

mxs-dma.c

dmaengine: mxs: Constify platform_device_id

2015-05-04 16:38:55 +05:30

nbpfaxi.c

dmaengine: nbpfaxi: Constify platform_device_id

2015-05-04 16:38:55 +05:30

of-dma.c

dmaengine: of_dma: Support for DMA routers

2015-05-09 17:11:25 +05:30

omap-dma.c

dmaengine: omap-dma: Implement device_synchronize callback

2016-02-22 08:19:02 +05:30

pch_dma.c

dmaengine: Remove remaining FSF mailing addresses

2015-07-06 19:18:53 +05:30

pl330.c

dmaengine: pl330: fix to support the burst mode

2016-03-01 09:11:25 +05:30

pxa_dma.c

ARM: SoC platform updates for v4.6

2016-03-20 14:57:08 -07:00

s3c24xx-dma.c

dmaengine: s3c24xx: Constify platform_device_id

2015-05-04 16:38:55 +05:30

sa11x0-dma.c

dmaengine: sa11x0: report slave capabilities to upper layers

2015-04-17 23:24:35 +05:30

sirf-dma.c

dmaengine: sirf: use __maybe_unused to hide pm functions

2016-03-04 20:31:35 +05:30

ste_dma40_ll.c

dmaengine: ste_dma40_ll: Replace meaningless register set with comment

2013-06-04 11:12:10 +02:00

ste_dma40_ll.h

…

ste_dma40.c

ste_dma40: Delete an unnecessary variable initialisation in d40_probe()

2015-12-10 09:17:10 +05:30

stm32-dma.c

dmaengine: stm32-dma: Fix unchecked deference of chan->desc

2015-12-10 09:45:22 +05:30

sun4i-dma.c

dmaengine: sun4i: support module autoloading

2016-03-03 21:16:35 +05:30

sun6i-dma.c

dmaengine: sun6i: Fix module autoload for OF platform driver

2015-10-01 07:35:26 +05:30

tegra20-apb-dma.c

dmaengine: tegra: Move of_device_id table near to its user

2016-03-04 20:36:01 +05:30

ti-dma-crossbar.c

dmaengine: ti-dma-crossbar: dra7: Support for reserving DMA event ranges

2015-11-30 15:09:16 +05:30

timb_dma.c

dmaengine: Remove remaining FSF mailing addresses

2015-07-06 19:18:53 +05:30

TODO

dmaengine: dw: don't perform DMA when dmaengine_submit is called

2014-07-15 22:14:30 +05:30

txx9dmac.c

dmaengine: txx9: Rename device_control

2014-12-22 12:33:22 +05:30

txx9dmac.h

MIPS: Replace MIPS-specific 64BIT_PHYS_ADDR with generic PHYS_ADDR_T_64BIT

2014-11-24 22:46:44 +01:00

virt-dma.c

dmaengine: virt-dma: don't always free descriptor upon completion

2015-11-16 08:32:16 +05:30

virt-dma.h

Merge branch 'topic/async' into for-linus

2016-01-06 15:17:47 +05:30

xgene-dma.c

dmaengine: xgene-dma: Fix double IRQ issue by setting IRQ_DISABLE_UNLAZY flag

2016-01-07 11:09:36 +05:30

zx296702_dma.c

dmaengine updates for 4.4-rc1

2015-11-10 10:05:17 -08:00