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| author | Ulf Hansson <[email protected]> | 2018-02-27 10:49:09 +0000 |
|---|---|---|
| committer | Ulf Hansson <[email protected]> | 2018-02-27 14:12:37 +0000 |
| commit | 3a574919f0cc15a46ec14c3e5e08300908991915 (patch) | |
| tree | 12b1bcfb3a04ec5ad64ef87e6a78c8f7edb90f54 /drivers/gpu/drm/amd/amdgpu/amdgpu_encoders.c | |
| parent | mmc: dw_mmc: Avoid accessing registers in runtime suspended state (diff) | |
| download | kernel-3a574919f0cc15a46ec14c3e5e08300908991915.tar.gz kernel-3a574919f0cc15a46ec14c3e5e08300908991915.zip | |
mmc: core: Avoid hanging to claim host for mmc via some nested calls
As the block layer, since the conversion to blkmq, claims the host using a
context, a following nested call to mmc_claim_host(), which isn't using a
context, may hang.
Calling mmc_interrupt_hpi() and mmc_read_bkops_status() via the mmc block
layer, may suffer from this problem, as these functions are calling
mmc_claim|release_host().
Let's fix the problem by removing the calls to mmc_claim|release_host()
from the above mentioned functions and instead make the callers responsible
of claiming/releasing the host. As a matter of fact, the existing callers
already deals with it.
Fixes: 81196976ed94 ("mmc: block: Add blk-mq support")
Reported-by: Dmitry Osipenko <[email protected]>
Suggested-by: Adrian Hunter <[email protected]>
Tested-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Ulf Hansson <[email protected]>
Acked-by: Adrian Hunter <[email protected]>
Reviewed-by: Shawn Lin <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_encoders.c')
0 files changed, 0 insertions, 0 deletions