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| author | Bhaumik Bhatt <bbhatt@codeaurora.org> | 2023-12-11 09:42:51 +0300 |
|---|---|---|
| committer | Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> | 2023-12-16 08:20:08 +0300 |
| commit | b89b6a863dd53bc70d8e52d50f9cfaef8ef5e9c9 (patch) | |
| tree | 6bd9563b95e9caeb175a9c39e56c048e5ded2160 /fs/bad_inode.c | |
| parent | 327ec5f70609cf00c6f961073c01857555c6a8eb (diff) | |
| download | linux-b89b6a863dd53bc70d8e52d50f9cfaef8ef5e9c9.tar.xz | |
bus: mhi: host: Add spinlock to protect WP access when queueing TREs
Protect WP accesses such that multiple threads queueing buffers for
incoming data do not race.
Meanwhile, if CONFIG_TRACE_IRQFLAGS is enabled, irq will be enabled once
__local_bh_enable_ip is called as part of write_unlock_bh. Hence, let's
take irqsave lock after TRE is generated to avoid running write_unlock_bh
when irqsave lock is held.
Cc: stable@vger.kernel.org
Fixes: 189ff97cca53 ("bus: mhi: core: Add support for data transfer")
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: Qiang Yu <quic_qianyu@quicinc.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Tested-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/1702276972-41296-2-git-send-email-quic_qianyu@quicinc.com
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Diffstat (limited to 'fs/bad_inode.c')
0 files changed, 0 insertions, 0 deletions