From: Xiongfeng Wang wangxiongfeng2@huawei.com
[ Upstream commit 94345aee285334e9e12fc70572e3d9380791a64e ]
Fix the following warning: drivers/tty/serial/amba-pl011.c: In function check_apply_cts_event_workaround: drivers/tty/serial/amba-pl011.c:1461:15: warning: variable dummy_read set but not used [-Wunused-but-set-variable]
The data read is useless and can be dropped.
Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: Xiongfeng Wang wangxiongfeng2@huawei.com Link: https://lore.kernel.org/r/1575619526-34482-1-git-send-email-wangxiongfeng2@h... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/tty/serial/amba-pl011.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index 637f72fb6427f..00a29052c226d 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -1474,8 +1474,6 @@ static void pl011_modem_status(struct uart_amba_port *uap)
static void check_apply_cts_event_workaround(struct uart_amba_port *uap) { - unsigned int dummy_read; - if (!uap->vendor->cts_event_workaround) return;
@@ -1487,8 +1485,8 @@ static void check_apply_cts_event_workaround(struct uart_amba_port *uap) * single apb access will incur 2 pclk(133.12Mhz) delay, * so add 2 dummy reads */ - dummy_read = pl011_read(uap, REG_ICR); - dummy_read = pl011_read(uap, REG_ICR); + pl011_read(uap, REG_ICR); + pl011_read(uap, REG_ICR); }
static irqreturn_t pl011_int(int irq, void *dev_id)