linux-kernel - [PATCH 4.4 018/131] mmc: sanitize bus width in debug output

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Date:   Mon,  1 Apr 2019 19:01:28 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 4.4 018/131] mmc: sanitize bus width in debug output

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Wolfram Sang <wsa+renesas@...g-engineering.com>

commit ed9feec72fc1fa194ebfdb79e14561b35decce63 upstream.

The bus width is sometimes the actual bus width, and sometimes indices
to different arrays encoding the bus width. In my debugging case "2"
could mean 8-bit as well as 4-bit, which was extremly confusing. Let's
use the human-readable actual bus width in all places.

Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mmc/core/core.c |    2 +-
 drivers/mmc/core/mmc.c  |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1039,7 +1039,7 @@ static inline void mmc_set_ios(struct mm
 		"width %u timing %u\n",
 		 mmc_hostname(host), ios->clock, ios->bus_mode,
 		 ios->power_mode, ios->chip_select, ios->vdd,
-		 ios->bus_width, ios->timing);
+		 1 << ios->bus_width, ios->timing);
 
 	host->ops->set_ios(host, ios);
 }
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -952,7 +952,7 @@ static int mmc_select_bus_width(struct m
 			break;
 		} else {
 			pr_warn("%s: switch to bus width %d failed\n",
-				mmc_hostname(host), ext_csd_bits[idx]);
+				mmc_hostname(host), 1 << bus_width);
 		}
 	}