# \[PATCH 4/4\] RDMA/cxgb4: remove dead NULL checks after GFP\_NOFAIL allocations - From: Gou Hao \ - Date: 2026-07-23 08:19:10 - List: linuxppc-dev - Page: https://ratatoskr.run/linuxppc-dev/2026/07/17308387 - Thread: https://ratatoskr.run/linuxppc-dev/2026/07/17308385/t.md ```text alloc_skb() with the __GFP_NOFAIL flag will never return NULL, so the subsequent NULL checks and error handling are unreachable dead code. Remove them. Signed-off-by: Gou Hao --- drivers/infiniband/hw/cxgb4/mem.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c index cd1b01014198..08631de17c0a 100644 --- a/drivers/infiniband/hw/cxgb4/mem.c +++ b/drivers/infiniband/hw/cxgb4/mem.c @@ -74,11 +74,8 @@ static int _c4iw_write_mem_dma_aligned(struct c4iw_rdev *rdev, u32 addr, c4iw_init_wr_wait(wr_waitp); wr_len = roundup(sizeof(*req) + sizeof(*sgl), 16); - if (!skb) { + if (!skb) skb = alloc_skb(wr_len, GFP_KERNEL | __GFP_NOFAIL); - if (!skb) - return -ENOMEM; - } set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0); req = __skb_put_zero(skb, wr_len); @@ -134,11 +131,8 @@ static int _c4iw_write_mem_inline(struct c4iw_rdev *rdev, u32 addr, u32 len, roundup(copy_len, T4_ULPTX_MIN_IO), 16); - if (!skb) { + if (!skb) skb = alloc_skb(wr_len, GFP_KERNEL | __GFP_NOFAIL); - if (!skb) - return -ENOMEM; - } set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0); req = __skb_put_zero(skb, wr_len); -- 2.20.1 ```