linux-kernel - [PATCH] staging: unisys: visornic: Replace GFP_ATOMIC with GFP

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Message-ID: <20190522170530.GA4331@hari-Inspiron-1545>
Date:   Wed, 22 May 2019 22:35:30 +0530
From:   Hariprasad Kelam <hariprasad.kelam@...il.com>
To:     David Kershner <david.kershner@...sys.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Petr Machata <petrm@...lanox.com>,
        David Ahern <dsahern@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jann Horn <jannh@...gle.com>,
        Hariprasad Kelam <hariprasad.kelam@...il.com>,
        sparmaintainer@...sys.com, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] staging: unisys: visornic: Replace GFP_ATOMIC with GFP_KERNEL

As per below information

GFP_KERNEL  FLAG

This is a normal allocation and might block. This is the flag to use in
process context code when it is safe to sleep.

GFP_ATOMIC FLAG

The allocation is high-priority and does not sleep. This is the flag to
use in interrupt handlers, bottom halves and other situations where you
cannot sleep

And we can take advantage of GFP_KERNEL , as when system is in low
memory chances of getting success is high compared to GFP_ATOMIC.

As visornic_probe is in  process context we can use GPF_KERNEL.

Signed-off-by: Hariprasad Kelam <hariprasad.kelam@...il.com>
---
 drivers/staging/unisys/visornic/visornic_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/unisys/visornic/visornic_main.c b/drivers/staging/unisys/visornic/visornic_main.c
index 1c1a470..9d4f1da 100644
--- a/drivers/staging/unisys/visornic/visornic_main.c
+++ b/drivers/staging/unisys/visornic/visornic_main.c
@@ -1861,12 +1861,12 @@ static int visornic_probe(struct visor_device *dev)
 	skb_queue_head_init(&devdata->xmitbufhead);
 
 	/* create a cmdrsp we can use to post and unpost rcv buffers */
-	devdata->cmdrsp_rcv = kmalloc(SIZEOF_CMDRSP, GFP_ATOMIC);
+	devdata->cmdrsp_rcv = kmalloc(SIZEOF_CMDRSP, GFP_KERNEL);
 	if (!devdata->cmdrsp_rcv) {
 		err = -ENOMEM;
 		goto cleanup_rcvbuf;
 	}
-	devdata->xmit_cmdrsp = kmalloc(SIZEOF_CMDRSP, GFP_ATOMIC);
+	devdata->xmit_cmdrsp = kmalloc(SIZEOF_CMDRSP, GFP_KERNEL);
 	if (!devdata->xmit_cmdrsp) {
 		err = -ENOMEM;
 		goto cleanup_cmdrsp_rcv;
-- 
2.7.4