github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-31 10:33:41 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

can: xilinx_can: xcan_probe(): check for error irq

Browse Source 
For the possible failure of the platform_get_irq(), the returned irq
could be error number and will finally cause the failure of the
request_irq().

Consider that platform_get_irq() can now in certain cases return
-EPROBE_DEFER, and the consequences of letting request_irq()
effectively convert that into -EINVAL, even at probe time rather than
later on. So it might be better to check just now.

Fixes: b1201e44f5 ("can: xilinx CAN controller support")
Link: https://lore.kernel.org/all/20211224021324.1447494-1-jiasheng@iscas.ac.cn
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Jiasheng Jiang 2021-12-24 10:13:24 +08:00 committed by Marc Kleine-Budde
parent 370d988cc5
commit c6564c13da
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/can/xilinx_can.c
View File

@ -1761,7 +1761,12 @@ static int xcan_probe(struct platform_device *pdev)
spin_lock_init(&priv->tx_lock);
/* Get IRQ for the device */
ndev->irq = platform_get_irq(pdev, 0);
ret = platform_get_irq(pdev, 0);
if (ret < 0)
goto err_free;
ndev->irq = ret;
ndev->flags |= IFF_ECHO; /* We support local echo */
platform_set_drvdata(pdev, ndev);