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LinuxKPI: disable device_release_driver()

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As reported by multiple people testing iwlwifi, device_release_driver()
can lead to a panic on secondary errors (usually during attach).
Disable device_release_driver() for the short-term to prevent the panic
but leave it in place so it can be re-worked and fixed properly for
the long-term more easily.

Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
This commit is contained in:
Bjoern A. Zeeb 2021-09-27 17:38:41 +00:00
parent bcddaadbef
commit 93b14194ac
1 changed files with 4 additions and 0 deletions
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4
sys/compat/linuxkpi/common/include/linux/device.h
View file

@ -506,6 +506,9 @@ static inline void
device_release_driver(struct device *dev)
{
#if 0
/* This leads to panics. Disable temporarily. Keep to rework. */
/* We also need to cleanup LinuxKPI bits. What else? */
lkpi_devres_release_free_list(dev);
dev_set_drvdata(dev, NULL);
@ -515,6 +518,7 @@ device_release_driver(struct device *dev)
if (device_is_attached(dev->bsddev))
device_detach(dev->bsddev);
mtx_unlock(&Giant);
#endif
}
static inline int