linux-kernel - [RESENT PATCH v5 1/5] scsi: ufs: remove max_t in ufs_get_device

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Message-Id: <20200603091959.27618-2-huobean@gmail.com>
Date:   Wed,  3 Jun 2020 11:19:55 +0200
From:   Bean Huo <huobean@...il.com>
To:     alim.akhtar@...sung.com, avri.altman@....com,
        asutoshd@...eaurora.org, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, stanley.chu@...iatek.com,
        beanhuo@...ron.com, bvanassche@....org, tomas.winkler@...el.com,
        cang@...eaurora.org
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        beanhuo@...look.com
Subject: [RESENT PATCH v5 1/5] scsi: ufs: remove max_t in ufs_get_device_desc

From: Bean Huo <beanhuo@...ron.com>

For the UFS device, the maximum descriptor size is 255, max_t called
in ufs_get_device_desc() is useless.

Signed-off-by: Bart van Assche <bvanassche@....org>
Signed-off-by: Bean Huo <beanhuo@...ron.com>
Acked-by: Avri Altman <avri.altman@....com>
Reviewed-by: Stanley Chu <stanley.chu@...iatek.com>
---
 drivers/scsi/ufs/ufshcd.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index ad4fc829cbb2..2cf077ab9dfd 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6903,14 +6903,11 @@ static void ufs_fixup_device_setup(struct ufs_hba *hba)
 static int ufs_get_device_desc(struct ufs_hba *hba)
 {
 	int err;
-	size_t buff_len;
 	u8 model_index;
 	u8 *desc_buf;
 	struct ufs_dev_info *dev_info = &hba->dev_info;
 
-	buff_len = max_t(size_t, hba->desc_size.dev_desc,
-			 QUERY_DESC_MAX_SIZE + 1);
-	desc_buf = kmalloc(buff_len, GFP_KERNEL);
+	desc_buf = kmalloc(QUERY_DESC_MAX_SIZE, GFP_KERNEL);
 	if (!desc_buf) {
 		err = -ENOMEM;
 		goto out;
-- 
2.17.1