Files
linux/drivers/base
Jason Gunthorpe 91a05d4c12 driver core: Call dma_cleanup() on the test_remove path
[ Upstream commit f429378a9b ]

When test_remove is enabled really_probe() does not properly pair
dma_configure() with dma_remove(), it will end up calling dma_configure()
twice. This corrupts the owner_cnt and renders the group unusable with
VFIO/etc.

Add the missing cleanup before going back to re_probe.

Fixes: 25f3bcfc54 ("driver core: Add dma_cleanup callback in bus_type")
Reported-by: Zenghui Yu <yuzenghui@huawei.com>
Tested-by: Zenghui Yu <yuzenghui@huawei.com>
Closes: https://lore.kernel.org/all/6472f254-c3c4-8610-4a37-8d9dfdd54ce8@huawei.com/
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/0-v2-4deed94e283e+40948-really_probe_dma_cleanup_jgg@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-09-13 09:42:53 +02:00
..
2022-09-01 18:17:14 +02:00
2021-07-21 11:53:42 +02:00
2021-12-30 13:54:42 +01:00
2022-09-11 20:26:04 -07:00
2021-06-15 17:14:36 +02:00
2021-06-15 17:14:36 +02:00