On 12/10/2023 11:42 PM, Qiang Yu wrote:
From: Bhaumik Bhatt <bbhatt@xxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx>
Fixes: 189ff97cca53 ("bus: mhi: core: Add support for data transfer")
Signed-off-by: Bhaumik Bhatt <bbhatt@xxxxxxxxxxxxxx>
Signed-off-by: Qiang Yu <quic_qianyu@xxxxxxxxxxx>
Seems to work fine for AIC100
Reviewed-by: Jeffrey Hugo <quic_jhugo@xxxxxxxxxxx>
Tested-by: Jeffrey Hugo <quic_jhugo@xxxxxxxxxxx>
