linux-kernel - [PATCH 1/2] mmc: cavium: Remove redundant pointer check

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20170413121051.10507-2-jglauber@cavium.com>
Date:   Thu, 13 Apr 2017 14:10:50 +0200
From:   Jan Glauber <jglauber@...ium.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>
Cc:     David Daney <david.daney@...ium.com>,
        "Steven J . Hill" <steven.hill@...ium.com>,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jan Glauber <jglauber@...ium.com>
Subject: [PATCH 1/2] mmc: cavium: Remove redundant pointer check

Remove redundant mmc->card check reported by smatch:

drivers/mmc/host/cavium.c:694 cvm_mmc_dma_request()
	warn: variable dereferenced before check 'mmc->card' (see line 675)

Signed-off-by: Jan Glauber <jglauber@...ium.com>
---
 drivers/mmc/host/cavium.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/cavium.c b/drivers/mmc/host/cavium.c
index d842b69..ddf902c 100644
--- a/drivers/mmc/host/cavium.c
+++ b/drivers/mmc/host/cavium.c
@@ -691,7 +691,7 @@ static void cvm_mmc_dma_request(struct mmc_host *mmc,
 	 * bit mask to check for CRC errors and timeouts only.
 	 * Otherwise, use the default power reset value.
 	 */
-	if (mmc->card && mmc_card_sd(mmc->card))
+	if (mmc_card_sd(mmc->card))
 		writeq(0x00b00000ull, host->base + MIO_EMM_STS_MASK(host));
 	else
 		writeq(0xe4390080ull, host->base + MIO_EMM_STS_MASK(host));
-- 
2.9.0.rc0.21.g7777322