patch "serial: tegra: Fix a mask operation that is always true" added to tty-linus

This is a note to let you know that I've just added the patch titled

serial: tegra: Fix a mask operation that is always true

to my tty git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
in the tty-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 3ddb4ce1e6e3bd112778ab93bbd9092f23a878ec Mon Sep 17 00:00:00 2001
From: Colin Ian King <[email protected]>
Date: Mon, 26 Apr 2021 11:55:14 +0100
Subject: serial: tegra: Fix a mask operation that is always true

Currently the expression lsr | UART_LSR_TEMT is always true and this seems suspect. I believe the intent was to mask lsr with UART_LSR_TEMT to check that bit, so the expression should be using the & operator instead. Fix this.

---
 drivers/tty/serial/serial-tegra.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index bbae072a125d..222032792d6c 100644
@@ -338,7 +338,7 @@ static void tegra_uart_fifo_reset(struct tegra_uart_port *tup, u8 fcr_bits)
 
 	do {
 		lsr = tegra_uart_read(tup, UART_LSR);
-		if ((lsr | UART_LSR_TEMT) && !(lsr & UART_LSR_DR))
+		if ((lsr & UART_LSR_TEMT) && !(lsr & UART_LSR_DR))
 			break;
 		udelay(1);
 	} while (--tmout);

2.31.1