linux-kernel - [RFT v2 20/29] memory: omap-gpmc: Return meaningful error codes in gpmc_cs_set

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Message-Id: <20200724074038.5597-21-krzk@kernel.org>
Date:   Fri, 24 Jul 2020 09:40:29 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        Markus Mayer <mmayer@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Florian Fainelli <f.fainelli@...il.com>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Roger Quadros <rogerq@...com>,
        Tony Lindgren <tony@...mide.com>,
        Vladimir Zapolskiy <vz@...ia.com>,
        Kukjin Kim <kgene@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-omap@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, linux-tegra@...r.kernel.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Krzysztof Kozlowski <krzk@...nel.org>
Subject: [RFT v2 20/29] memory: omap-gpmc: Return meaningful error codes in gpmc_cs_set_timings()

The callers of gpmc_cs_set_timings() expect to receive -ERRNO on errors
and they pass further what they have received.

However gpmc_cs_set_timings() was returning -1 (equal to -EPERM) which
does not make sense in this context.

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>

---

Not tested

Changes since v1:
1. New patch
---
 drivers/memory/omap-gpmc.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c
index c158b6cae9a9..1e370142dfca 100644
--- a/drivers/memory/omap-gpmc.c
+++ b/drivers/memory/omap-gpmc.c
@@ -638,7 +638,7 @@ static int set_gpmc_timing_reg(int cs, int reg, int st_bit, int end_bit, int max
 #define GPMC_SET_ONE_CD_MAX(reg, st, end, max, field, cd)  \
 	if (set_gpmc_timing_reg(cs, (reg), (st), (end), (max), \
 	    t->field, (cd), #field) < 0)                       \
-		return -1
+		return -ENXIO
 
 #define GPMC_SET_ONE(reg, st, end, field) \
 	GPMC_SET_ONE_CD_MAX(reg, st, end, 0, field, GPMC_CD_FCLK)
@@ -708,7 +708,7 @@ int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t,
 
 	div = gpmc_calc_divider(t->sync_clk);
 	if (div < 0)
-		return div;
+		return -EINVAL;
 
 	/*
 	 * See if we need to change the divider for waitmonitoringtime.
@@ -733,7 +733,7 @@ int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t,
 			       __func__,
 			       t->wait_monitoring
 			       );
-			return -1;
+			return -ENXIO;
 		}
 	}
 
-- 
2.17.1