Messages in this thread | | | Date | Fri, 15 Dec 2023 11:23:42 -0700 | Subject | Re: [PATCH v5 1/2] bus: mhi: host: Add spinlock to protect WP access when queueing TREs | From | Jeffrey Hugo <> |
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On 12/10/2023 11:42 PM, Qiang Yu wrote: > From: Bhaumik Bhatt <bbhatt@codeaurora.org> > > 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>
Seems to work fine for AIC100
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Tested-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
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