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Subject[PATCH] scsi: message: fusion: Use GFP_KERNEL instead of GFP_ATOMIC in non-atomic context
Date
Just a few lines below this kzalloc() we have a mutex_lock() which can
sleep.

More over, the only way to call this function is when a delayed work is
schedule. And delayed work can sleep.
INIT_DELAYED_WORK(&fw_event->work, mptsas_firmware_event_work);
--> mptsas_firmware_event_work()
--> mptsas_send_link_status_event()
--> mptsas_expander_add()

So there is really no good reason to use GFP_ATOMIC here. Change it to
GFP_KERNEL to give more opportunities to the kernel.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
drivers/message/fusion/mptsas.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 4acd8f9a48e1..34901bcd1ce8 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -3680,7 +3680,7 @@ mptsas_expander_add(MPT_ADAPTER *ioc, u16 handle)
MPI_SAS_EXPAND_PGAD_FORM_SHIFT), handle)))
return NULL;

- port_info = kzalloc(sizeof(struct mptsas_portinfo), GFP_ATOMIC);
+ port_info = kzalloc(sizeof(struct mptsas_portinfo), GFP_KERNEL);
if (!port_info) {
dfailprintk(ioc, printk(MYIOC_s_ERR_FMT
"%s: exit at line=%d\n", ioc->name,
--
2.32.0
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