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authorAlan Cox <alan@linux.intel.com>2009-11-30 16:16:30 +0300
committerGreg Kroah-Hartman <gregkh@suse.de>2009-12-12 02:18:06 +0300
commit1f100b323d19469b06a63ccd6130ed71760145cc (patch)
treede475d8906cefed5e8146ad82403e52ed9399a76
parent4b3b49bb77eddb540e7c69e2129f5334cf713bf8 (diff)
downloadlinux-1f100b323d19469b06a63ccd6130ed71760145cc.tar.xz
tty: sdio_uart: Fix the locking on "func" for new code
The new dtr_rts function didn't take the port->func lock as it should so add use of the lock there. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/mmc/card/sdio_uart.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c
index 2a13db54ffc4..f53755533e7e 100644
--- a/drivers/mmc/card/sdio_uart.c
+++ b/drivers/mmc/card/sdio_uart.c
@@ -603,10 +603,14 @@ static void uart_dtr_rts(struct tty_port *tport, int onoff)
{
struct sdio_uart_port *port =
container_of(tport, struct sdio_uart_port, port);
+ int ret = sdio_uart_claim_func(port);
+ if (ret)
+ return;
if (onoff == 0)
sdio_uart_clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
else
sdio_uart_set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
+ sdio_uart_release_func(port);
}
/**