diff options
| author | Fabio Estevam <fabio.estevam@freescale.com> | 2013-02-18 14:20:31 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-19 09:51:09 +0400 |
| commit | 07dcf8e9cc77e86eedfc28fa37713b5471e906b7 (patch) | |
| tree | 0bc1555b8ac4d8ff36bd6d036a39291a9c5a5f53 /drivers/net/ethernet/freescale/fec.c | |
| parent | eb6b9a8cad65e820b145547844b108117cece3a0 (diff) | |
| download | linux-07dcf8e9cc77e86eedfc28fa37713b5471e906b7.tar.xz | |
net: fec: Do a sanity check on the gpio number
Check whether the phy-reset GPIO is valid, prior to requesting it.
In the case a board does not provide a phy-reset GPIO, just returns immediately.
With such gpio validation in place, it is also safe to change from pr_debug to
dev_err in the case the gpio request fails.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/fec.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/fec.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c index 0fe68c46267e..29d82cf1528e 100644 --- a/drivers/net/ethernet/freescale/fec.c +++ b/drivers/net/ethernet/freescale/fec.c @@ -1689,10 +1689,13 @@ static void fec_reset_phy(struct platform_device *pdev) msec = 1; phy_reset = of_get_named_gpio(np, "phy-reset-gpios", 0); + if (!gpio_is_valid(phy_reset)) + return; + err = devm_gpio_request_one(&pdev->dev, phy_reset, GPIOF_OUT_INIT_LOW, "phy-reset"); if (err) { - pr_debug("FEC: failed to get gpio phy-reset: %d\n", err); + dev_err(&pdev->dev, "failed to get phy-reset-gpios: %d\n", err); return; } msleep(msec); |