Commit 6a2c4169 authored by Dan Carpenter's avatar Dan Carpenter Committed by Greg Kroah-Hartman

serial: sh-sci: Uninitialized variables in sysfs files

commit 4ab3c51e upstream.

The kstrtol() function returns -ERANGE as well as -EINVAL so these tests
are not enough.  It's not a super serious bug, but my static checker
correctly complains that the "r" variable might be used uninitialized.

Fixes: 5d23188a ("serial: sh-sci: make RX FIFO parameters tunable via sysfs")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent bc6ff930
......@@ -1085,10 +1085,12 @@ static ssize_t rx_trigger_store(struct device *dev,
{
struct uart_port *port = dev_get_drvdata(dev);
struct sci_port *sci = to_sci_port(port);
int ret;
long r;
if (kstrtol(buf, 0, &r) == -EINVAL)
return -EINVAL;
ret = kstrtol(buf, 0, &r);
if (ret)
return ret;
sci->rx_trigger = scif_set_rtrg(port, r);
if (port->type == PORT_SCIFA || port->type == PORT_SCIFB)
......@@ -1116,10 +1118,12 @@ static ssize_t rx_fifo_timeout_store(struct device *dev,
{
struct uart_port *port = dev_get_drvdata(dev);
struct sci_port *sci = to_sci_port(port);
int ret;
long r;
if (kstrtol(buf, 0, &r) == -EINVAL)
return -EINVAL;
ret = kstrtol(buf, 0, &r);
if (ret)
return ret;
sci->rx_fifo_timeout = r;
scif_set_rtrg(port, 1);
if (r > 0)
......
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