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| author | Pavel Skripkin <paskripkin@gmail.com> | 2021-06-18 19:14:47 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-19 21:46:00 +0300 |
| commit | 0de449d599594f5472e00267d651615c7f2c6c1d (patch) | |
| tree | e2d92a2b12829bc7c4967e06f7b50d96e91e6654 /drivers/net/ethernet/ezchip | |
| parent | 4ae85b23e1f052379f0316e42494e2f84f2a3e6f (diff) | |
| download | linux-0de449d599594f5472e00267d651615c7f2c6c1d.tar.xz | |
net: ethernet: ezchip: fix error handling
As documented at drivers/base/platform.c for platform_get_irq:
* Gets an IRQ for a platform device and prints an error message if finding the
* IRQ fails. Device drivers should check the return value for errors so as to
* not pass a negative integer value to the request_irq() APIs.
So, the driver should check that platform_get_irq() return value
is _negative_, not that it's equal to zero, because -ENXIO (return
value from request_irq() if irq was not found) will
pass this check and it leads to passing negative irq to request_irq()
Fixes: 0dd077093636 ("NET: Add ezchip ethernet driver")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/ezchip')
| -rw-r--r-- | drivers/net/ethernet/ezchip/nps_enet.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/ezchip/nps_enet.c b/drivers/net/ethernet/ezchip/nps_enet.c index c562a1e83913..f9a288a6ec8c 100644 --- a/drivers/net/ethernet/ezchip/nps_enet.c +++ b/drivers/net/ethernet/ezchip/nps_enet.c @@ -607,7 +607,7 @@ static s32 nps_enet_probe(struct platform_device *pdev) /* Get IRQ number */ priv->irq = platform_get_irq(pdev, 0); - if (!priv->irq) { + if (priv->irq < 0) { dev_err(dev, "failed to retrieve <irq Rx-Tx> value from device tree\n"); err = -ENODEV; goto out_netdev; |