linux-kernel - [PATCH 18/29] firmware-gsmi: Delete an unnecessary check before the function call "dma_pool

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Date:   Fri,  9 Sep 2016 16:18:40 +0100
From:   Matt Fleming <matt@...eblueprint.co.uk>
To:     Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H . Peter Anvin" <hpa@...or.com>
Cc:     Markus Elfring <elfring@...rs.sourceforge.net>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org,
        Matt Fleming <matt@...eblueprint.co.uk>,
        Greg KH <gregkh@...uxfoundation.org>,
        Julia Lawall <julia.lawall@...6.fr>,
        Michel Lespinasse <walken@...gle.com>,
        Mike Waychison <mikew@...gle.com>
Subject: [PATCH 18/29] firmware-gsmi: Delete an unnecessary check before the function call "dma_pool_destroy"

From: Markus Elfring <elfring@...rs.sourceforge.net>

The dma_pool_destroy() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
Cc: Greg KH <gregkh@...uxfoundation.org>
Cc: Julia Lawall <julia.lawall@...6.fr>
Cc: Mike Waychison <mikew@...gle.com>
Cc: Michel Lespinasse <walken@...gle.com>
Signed-off-by: Matt Fleming <matt@...eblueprint.co.uk>
---
 drivers/firmware/google/gsmi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/firmware/google/gsmi.c b/drivers/firmware/google/gsmi.c
index f1ab05ea56bb..c46387160976 100644
--- a/drivers/firmware/google/gsmi.c
+++ b/drivers/firmware/google/gsmi.c
@@ -910,8 +910,7 @@ out_err:
 	gsmi_buf_free(gsmi_dev.param_buf);
 	gsmi_buf_free(gsmi_dev.data_buf);
 	gsmi_buf_free(gsmi_dev.name_buf);
-	if (gsmi_dev.dma_pool)
-		dma_pool_destroy(gsmi_dev.dma_pool);
+	dma_pool_destroy(gsmi_dev.dma_pool);
 	platform_device_unregister(gsmi_dev.pdev);
 	pr_info("gsmi: failed to load: %d\n", ret);
 	return ret;
-- 
2.9.3