6.6-stable review patch. If anyone has any objections, please let me know.
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From: Duanqiang Wen duanqiangwen@net-swift.com
[ 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 --- drivers/net/ethernet/wangxun/libwx/wx_lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c index e078f4071dc23..be434c833c69c 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c +++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c @@ -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);