iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: libwx: fix alloc msix vectors failed

Browse Source 
[ Upstream commit 69197dfc64007b5292cc960581548f41ccd44828 ]

driver needs queue msix vectors and one misc irq vector,
but only queue vectors need irq affinity.
when num_online_cpus is less than chip max msix vectors,
driver will acquire (num_online_cpus + 1) vecotrs, and
call pci_alloc_irq_vectors_affinity functions with affinity
params without setting pre_vectors or post_vectors, it will
cause return error code -ENOSPC.
Misc irq vector is vector 0, driver need to set affinity params
.pre_vectors = 1.

Fixes: 3f703186113f ("net: libwx: Add irq flow functions")
Signed-off-by: Duanqiang Wen <duanqiangwen@net-swift.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Duanqiang Wen 2024-04-18 10:15:56 +08:00 committed by Greg Kroah-Hartman
parent 2122198537
commit 3ccbec645d
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/wangxun/libwx/wx_lib.c
View File

@ -1585,7 +1585,7 @@ static void wx_set_num_queues(struct wx *wx)
*/
static int wx_acquire_msix_vectors(struct wx *wx)
{
struct irq_affinity affd = {0, };
struct irq_affinity affd = { .pre_vectors = 1 };
int nvecs, i;
nvecs = min_t(int, num_online_cpus(), wx->mac.max_msix_vectors);