From 3ccbec645debc15c797b154d4ff1b9acd30f23d8 Mon Sep 17 00:00:00 2001 From: Duanqiang Wen Date: Thu, 18 Apr 2024 10:15:56 +0800 Subject: [PATCH] net: libwx: fix alloc msix vectors failed [ 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 Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- 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); -- 2.47.3