* [PATCH] [SCSI]: megaraid: avoid sleeping on spinlock
@ 2013-02-21 11:57 Denis Efremov
0 siblings, 0 replies; only message in thread
From: Denis Efremov @ 2013-02-21 11:57 UTC (permalink / raw)
To: Neela Syam Kolli; +Cc: Denis Efremov, linux-scsi, linux-kernel, ldv-project
GFP_KERNEL may cause pci_pool_alloc() sleep,
so we need use GFP_ATOMIC instead of GFP_KERNEL.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Denis Efremov <yefremov.denis@gmail.com>
---
drivers/scsi/megaraid/megaraid_mm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/megaraid/megaraid_mm.c b/drivers/scsi/megaraid/megaraid_mm.c
index 25506c7..4b2f336 100644
--- a/drivers/scsi/megaraid/megaraid_mm.c
+++ b/drivers/scsi/megaraid/megaraid_mm.c
@@ -568,7 +568,7 @@ mraid_mm_attach_buf(mraid_mmadp_t *adp, uioc_t *kioc, int xferlen)
kioc->pool_index = right_pool;
kioc->free_buf = 1;
- kioc->buf_vaddr = pci_pool_alloc(pool->handle, GFP_KERNEL,
+ kioc->buf_vaddr = pci_pool_alloc(pool->handle, GFP_ATOMIC,
&kioc->buf_paddr);
spin_unlock_irqrestore(&pool->lock, flags);
--
1.8.1.2
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