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Subject[PATCH] firewire: sbp2: Replace GFP_ATOMIC with GFP_KERNEL in sbp2_scsi_queuecommand()
Date
sbp2_scsi_queuecommand() is only set to .queuecommand of 
"struct scsi_host_template", and this function pointer is never called
in atomic context.

sbp2_scsi_queuecommand() calls kzalloc() with GFP_ATOMIC,
which is not necessary.
GFP_ATOMIC can be replaced with GFP_KERNEL.

This is found by a static analysis tool named DCNS written by myself.
I also manually check the kernel code before reporting it.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
---
drivers/firewire/sbp2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firewire/sbp2.c b/drivers/firewire/sbp2.c
index 6bac03999fd4..a7cd9d87eb02 100644
--- a/drivers/firewire/sbp2.c
+++ b/drivers/firewire/sbp2.c
@@ -1463,7 +1463,7 @@ static int sbp2_scsi_queuecommand(struct Scsi_Host *shost,
struct sbp2_command_orb *orb;
int generation, retval = SCSI_MLQUEUE_HOST_BUSY;

- orb = kzalloc(sizeof(*orb), GFP_ATOMIC);
+ orb = kzalloc(sizeof(*orb), GFP_KERNEL);
if (orb == NULL)
return SCSI_MLQUEUE_HOST_BUSY;

--
2.17.0
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