linux-kernel - [PATCH] staging: rts5208: remove redundant sd30

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Message-Id: <20190830081047.13630-1-colin.king@canonical.com>
Date:   Fri, 30 Aug 2019 09:10:47 +0100
From:   Colin King <colin.king@...onical.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] staging: rts5208: remove redundant sd30_mode checks

From: Colin Ian King <colin.king@...onical.com>

There are two hunks of code that check if sd30_mode is true however
an earlier check in an outer code block on sd30_mode being false means
that sd30_mode can never be true at these points so these checks are
redundant.  Remove the dead code.

Addresses-Coverity: ("Logically dead code")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/staging/rts5208/sd.c | 28 ++++++++++------------------
 1 file changed, 10 insertions(+), 18 deletions(-)

diff --git a/drivers/staging/rts5208/sd.c b/drivers/staging/rts5208/sd.c
index a06045344301..25c31496757e 100644
--- a/drivers/staging/rts5208/sd.c
+++ b/drivers/staging/rts5208/sd.c
@@ -2573,17 +2573,13 @@ static int reset_sd(struct rtsx_chip *chip)
 			retval = sd_sdr_tuning(chip);
 
 		if (retval != STATUS_SUCCESS) {
-			if (sd20_mode) {
+			retval = sd_init_power(chip);
+			if (retval != STATUS_SUCCESS)
 				goto status_fail;
-			} else {
-				retval = sd_init_power(chip);
-				if (retval != STATUS_SUCCESS)
-					goto status_fail;
 
-				try_sdio = false;
-				sd20_mode = true;
-				goto switch_fail;
-			}
+			try_sdio = false;
+			sd20_mode = true;
+			goto switch_fail;
 		}
 
 		sd_send_cmd_get_rsp(chip, SEND_STATUS, sd_card->sd_addr,
@@ -2598,17 +2594,13 @@ static int reset_sd(struct rtsx_chip *chip)
 		if (read_lba0) {
 			retval = sd_read_lba0(chip);
 			if (retval != STATUS_SUCCESS) {
-				if (sd20_mode) {
+				retval = sd_init_power(chip);
+				if (retval != STATUS_SUCCESS)
 					goto status_fail;
-				} else {
-					retval = sd_init_power(chip);
-					if (retval != STATUS_SUCCESS)
-						goto status_fail;
 
-					try_sdio = false;
-					sd20_mode = true;
-					goto switch_fail;
-				}
+				try_sdio = false;
+				sd20_mode = true;
+				goto switch_fail;
 			}
 		}
 	}
-- 
2.20.1