control
version=1
nRows=35
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time	ercspn_r
0.0	6.09756
2.54237	7.31707
4.23729	9.7561
7.62712	9.7561
11.0169	7.31707
12.7119	7.31707
14.4068	6.09756
17.7966	6.09756
19.4915	4.87805
21.1864	4.87805
22.8814	3.65854
29.661	3.65854
31.3559	2.43902
35.5932	2.43902
43.2203	2.43902
47.4576	6.09756
50.8475	10.9756
55.0847	17.0732
58.4746	17.0732
60.1695	14.6341
61.8644	13.4146
65.2542	9.7561
68.6441	8.53659
72.0339	7.31707
73.7288	6.09756
77.1186	4.87805
79.661	4.87805
81.3559	3.65854
85.5932	3.65854
89.8305	3.65854
91.5254	2.43902
94.9153	3.65854
98.3051	4.87805
100	4.87805
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<tr><th>author</th><td>Stanimir Varbanov &lt;stanimir.varbanov@linaro.org&gt;</td><td class='right'>2016-04-11 11:38:38 +0300</td></tr>
<tr><th>committer</th><td>Vinod Koul &lt;vinod.koul@intel.com&gt;</td><td class='right'>2016-04-19 21:11:31 +0530</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=f139f97878039f9a49db6cb555d95f6b6e9ba0f8'>f139f97878039f9a49db6cb555d95f6b6e9ba0f8</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=f139f97878039f9a49db6cb555d95f6b6e9ba0f8'>patch</a>)</td></tr>
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<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=f55532a0c0b8bb6148f4e07853b876ef73bc69ca'>f55532a0c0b8bb6148f4e07853b876ef73bc69ca</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=f139f97878039f9a49db6cb555d95f6b6e9ba0f8&amp;id2=f55532a0c0b8bb6148f4e07853b876ef73bc69ca'>diff</a>)</td></tr></table>
<div class='commit-subject'>dmaengine: qcom: bam_dma: fix dma free memory on remove</div><div class='commit-msg'>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 : [&lt;ffffffc00016180c&gt;] lr : [&lt;ffffffc00016197c&gt;] 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 &lt;stanimir.varbanov@linaro.org&gt;
Reviewed-by: Andy Gross &lt;andy.gross@linaro.org&gt;
Signed-off-by: Vinod Koul &lt;vinod.koul@intel.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=f139f97878039f9a49db6cb555d95f6b6e9ba0f8'>Diffstat</a></div><table summary='diffstat' class='diffstat'>