| Message ID | 20220519032108.2996400-1-yangyingliang@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [-next,v2] net: wwan: t7xx: use GFP_ATOMIC under spin lock in t7xx_cldma_gpd_set_next_ptr() | expand |
On Thu, 19 May 2022 at 05:10, Yang Yingliang <yangyingliang@huawei.com> wrote: > > Sometimes t7xx_cldma_gpd_set_next_ptr() is called under spin lock, > so add 'gfp_mask' parameter in t7xx_cldma_gpd_set_next_ptr() to pass > the flag. > > Fixes: 39d439047f1d ("net: wwan: t7xx: Add control DMA interface") > Reported-by: Hulk Robot <hulkci@huawei.com> > Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Hello: This patch was applied to netdev/net-next.git (master) by Jakub Kicinski <kuba@kernel.org>: On Thu, 19 May 2022 11:21:08 +0800 you wrote: > Sometimes t7xx_cldma_gpd_set_next_ptr() is called under spin lock, > so add 'gfp_mask' parameter in t7xx_cldma_gpd_set_next_ptr() to pass > the flag. > > Fixes: 39d439047f1d ("net: wwan: t7xx: Add control DMA interface") > Reported-by: Hulk Robot <hulkci@huawei.com> > Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> > > [...] Here is the summary with links: - [-next,v2] net: wwan: t7xx: use GFP_ATOMIC under spin lock in t7xx_cldma_gpd_set_next_ptr() https://git.kernel.org/netdev/net-next/c/9ee152ee3ee3 You are awesome, thank you!
diff --git a/drivers/net/wwan/t7xx/t7xx_hif_cldma.c b/drivers/net/wwan/t7xx/t7xx_hif_cldma.c index 0c52801ed0de..6ff30cb8eb16 100644 --- a/drivers/net/wwan/t7xx/t7xx_hif_cldma.c +++ b/drivers/net/wwan/t7xx/t7xx_hif_cldma.c @@ -91,9 +91,9 @@ static void t7xx_cldma_gpd_set_next_ptr(struct cldma_gpd *gpd, dma_addr_t next_p } static int t7xx_cldma_alloc_and_map_skb(struct cldma_ctrl *md_ctrl, struct cldma_request *req, - size_t size) + size_t size, gfp_t gfp_mask) { - req->skb = __dev_alloc_skb(size, GFP_KERNEL); + req->skb = __dev_alloc_skb(size, gfp_mask); if (!req->skb) return -ENOMEM; @@ -174,7 +174,7 @@ static int t7xx_cldma_gpd_rx_from_q(struct cldma_queue *queue, int budget, bool spin_unlock_irqrestore(&queue->ring_lock, flags); req = queue->rx_refill; - ret = t7xx_cldma_alloc_and_map_skb(md_ctrl, req, queue->tr_ring->pkt_size); + ret = t7xx_cldma_alloc_and_map_skb(md_ctrl, req, queue->tr_ring->pkt_size, GFP_KERNEL); if (ret) return ret; @@ -402,7 +402,7 @@ static struct cldma_request *t7xx_alloc_rx_request(struct cldma_ctrl *md_ctrl, s if (!req->gpd) goto err_free_req; - val = t7xx_cldma_alloc_and_map_skb(md_ctrl, req, pkt_size); + val = t7xx_cldma_alloc_and_map_skb(md_ctrl, req, pkt_size, GFP_KERNEL); if (val) goto err_free_pool; @@ -801,7 +801,7 @@ static int t7xx_cldma_clear_rxq(struct cldma_ctrl *md_ctrl, int qnum) if (req->skb) continue; - ret = t7xx_cldma_alloc_and_map_skb(md_ctrl, req, rxq->tr_ring->pkt_size); + ret = t7xx_cldma_alloc_and_map_skb(md_ctrl, req, rxq->tr_ring->pkt_size, GFP_ATOMIC); if (ret) break;
Sometimes t7xx_cldma_gpd_set_next_ptr() is called under spin lock, so add 'gfp_mask' parameter in t7xx_cldma_gpd_set_next_ptr() to pass the flag. Fixes: 39d439047f1d ("net: wwan: t7xx: Add control DMA interface") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- v2: change the parameter to gfp flag. --- drivers/net/wwan/t7xx/t7xx_hif_cldma.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)