diff options
| author | Magnus Damm <damm@opensource.se> | 2012-05-09 08:49:57 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-05-10 00:11:30 +0200 |
| commit | 94e792ab66d696aad2e52c91bae4cfbeefe4c9f6 (patch) | |
| tree | 7305a6bc6e602c2edbb03dfd7c13168fbafa8145 /drivers/tty/serial | |
| parent | serial_core: Update buffer overrun statistics. (diff) | |
| download | linux-94e792ab66d696aad2e52c91bae4cfbeefe4c9f6.tar.xz linux-94e792ab66d696aad2e52c91bae4cfbeefe4c9f6.zip | |
serial8250-em: clk_get() IS_ERR() error handling fix
Update the 8250_em driver to correctly handle the case
where no clock is associated with the device.
The return value of clk_get() needs to be checked with
IS_ERR() to avoid NULL pointer referencing.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/8250/8250_em.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_em.c b/drivers/tty/serial/8250/8250_em.c index ff4254249bd8..be6c28937ecc 100644 --- a/drivers/tty/serial/8250/8250_em.c +++ b/drivers/tty/serial/8250/8250_em.c @@ -110,8 +110,9 @@ static int __devinit serial8250_em_probe(struct platform_device *pdev) } priv->sclk = clk_get(&pdev->dev, "sclk"); - if (!priv->sclk) { + if (IS_ERR(priv->sclk)) { dev_err(&pdev->dev, "unable to get clock\n"); + ret = PTR_ERR(priv->sclk); goto err1; } |