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[95.91.236.93]) by smtp.gmail.com with ESMTPSA id q2sm919353eje.24.2021.03.19.05.14.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Mar 2021 05:14:08 -0700 (PDT) From: Bean Huo To: rric@kernel.org, ulf.hansson@linaro.org, linus.walleij@linaro.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: beanhuo@micron.com, stable@vger.kernel.org Subject: [PATCH v1 2/2] mmc: cavium: Remove redundant if-statement checkup Date: Fri, 19 Mar 2021 13:13:57 +0100 Message-Id: <20210319121357.255176-3-huobean@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210319121357.255176-1-huobean@gmail.com> References: <20210319121357.255176-1-huobean@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Bean Huo Currently, we have two ways to issue multiple-block read/write the command to the eMMC. One is by normal IO request path fs->block->mmc. Another one is that we can issue multiple-block read/write through MMC ioctl interface. For the first path, mrq->stop, and mrq->stop->opcode will be initialized in mmc_blk_data_prep(). However, for the second IO path, mrq->stop is not initialized since it is a pre-defined multiple blocks read/write. Meanwhile, if it is open-ended multiple block read/write command, STOP_TRANSMISSION CMD12 will be issued later in mmc_blk_issue_drv_op(), since it is MMC_IOC_MULTI_CMD. So, delete these if-statement checkups, let these kinds of multiple-block read/write request go. Fixes 'ba3869ff32e4 ("mmc: cavium: Add core MMC driver for Cavium SOCs")' Cc: stable@vger.kernel.org Signed-off-by: Bean Huo --- drivers/mmc/host/cavium.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/mmc/host/cavium.c b/drivers/mmc/host/cavium.c index 95a41983c6c0..8fb7cbcf62ad 100644 --- a/drivers/mmc/host/cavium.c +++ b/drivers/mmc/host/cavium.c @@ -654,8 +654,7 @@ static void cvm_mmc_dma_request(struct mmc_host *mmc, struct mmc_data *data; u64 emm_dma, addr; - if (!mrq->data || !mrq->data->sg || !mrq->data->sg_len || - !mrq->stop || mrq->stop->opcode != MMC_STOP_TRANSMISSION) { + if (!mrq->data || !mrq->data->sg || !mrq->data->sg_len) { dev_err(&mmc->card->dev, "Error: %s no data\n", __func__); goto error; }