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net: fman: Unregister ethernet device on removal

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[ Upstream commit b7cbc6740b ]

When the mac device gets removed, it leaves behind the ethernet device.
This will result in a segfault next time the ethernet device accesses
mac_dev. Remove the ethernet device when we get removed to prevent
this. This is not completely reversible, since some resources aren't
cleaned up properly, but that can be addressed later.

Fixes: 3933961682 ("fsl/fman: Add FMan MAC driver")
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Link: https://lore.kernel.org/r/20221103182831.2248833-1-sean.anderson@seco.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sean Anderson 2022-11-03 14:28:30 -04:00 • committed by Justin Hammond
parent 328a8acbf0
commit 5549787c45
1 changed files with 9 additions and 0 deletions
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9
drivers/net/ethernet/freescale/fman/mac.c
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@ -882,12 +882,21 @@ _return:
return err; return err;
} }
static int mac_remove(struct platform_device *pdev)
{
struct mac_device *mac_dev = platform_get_drvdata(pdev);
platform_device_unregister(mac_dev->priv->eth_dev);
return 0;
}
static struct platform_driver mac_driver = { static struct platform_driver mac_driver = {
.driver = { .driver = {
.name = KBUILD_MODNAME, .name = KBUILD_MODNAME,
.of_match_table = mac_match, .of_match_table = mac_match,
}, },
.probe = mac_probe, .probe = mac_probe,
.remove = mac_remove,
}; };
builtin_platform_driver(mac_driver); builtin_platform_driver(mac_driver);