From a5b0e4062fb225155189e593699bbfcd0597f8b5 Mon Sep 17 00:00:00 2001
From: "Bryant G. Ly" <bryantly@linux.vnet.ibm.com>
Date: Wed, 11 Jan 2017 13:16:42 -0600
Subject: [PATCH] ibmvscsis: Fix sleeping in interrupt context
Currently, dma_alloc_coherent is being called with a GFP_KERNEL
flag which allows it to sleep in an interrupt context, need to
change to GFP_ATOMIC.
Cc: stable@vger.kernel.org
Tested-by: Steven Royer <seroyer@linux.vnet.ibm.com>
Reviewed-by: Michael Cyr <mikecyr@linux.vnet.ibm.com>
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
---
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
index 9c91e757c2ef5e..99b747cedbebc5 100644
--- a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
+++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
@@ -1392,7 +1392,7 @@ static long ibmvscsis_adapter_info(struct scsi_info *vscsi,
}
info = dma_alloc_coherent(&vscsi->dma_dev->dev, sizeof(*info), &token,
- GFP_KERNEL);
+ GFP_ATOMIC);
if (!info) {
dev_err(&vscsi->dev, "bad dma_alloc_coherent %p\n",
iue->target);
@@ -1510,7 +1510,7 @@ static int ibmvscsis_cap_mad(struct scsi_info *vscsi, struct iu_entry *iue)
}
cap = dma_alloc_coherent(&vscsi->dma_dev->dev, olen, &token,
- GFP_KERNEL);
+ GFP_ATOMIC);
if (!cap) {
dev_err(&vscsi->dev, "bad dma_alloc_coherent %p\n",
iue->target);
--
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