From: Dan Carpenter dan.carpenter@oracle.com
stable inclusion from stable-5.10.50 commit f5186bd17f3b37a7b6c85da5c0b6acb8d29ed264 bugzilla: 174522 https://gitee.com/openeuler/kernel/issues/I4DNFY
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit d7e325aaa8c3593b5a572b583ecad79e95f32e7f ]
This loop ends on -1 so the error message will never be printed.
Fixes: 4bcf59a5dea0 ("serial: 8250: 8250_omap: Account for data in flight during DMA teardown") Reviewed-by: Alexander Sverdlin alexander.sverdlin@gmail.com Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Link: https://lore.kernel.org/r/YIpd+kOpXKMpEXPf@mwanda Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/tty/serial/8250/8250_omap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index 0cc6d35a0815..f284c6f77a6c 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -784,7 +784,7 @@ static void __dma_rx_do_complete(struct uart_8250_port *p) poll_count--) cpu_relax();
- if (!poll_count) + if (poll_count == -1) dev_err(p->port.dev, "teardown incomplete\n"); } }