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Message-Id: <04333c0b73dfddeba3d2bdeb5198b220b4a21695.1426581620.git.jslaby@suse.cz> Date: Tue, 17 Mar 2015 09:39:58 +0100 From: Jiri Slaby <jslaby@...e.cz> To: stable@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Jisheng Zhang <jszhang@...vell.com>, Ulf Hansson <ulf.hansson@...aro.org>, Jiri Slaby <jslaby@...e.cz> Subject: [PATCH 3.12 020/175] mmc: sdhci-pxav3: fix setting of pdata->clk_delay_cycles From: Jisheng Zhang <jszhang@...vell.com> 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit 14460dbaf7a5a0488963fdb8232ad5c8a8cca7b7 upstream. Current code checks "clk_delay_cycles > 0" to know whether the optional "mrvl,clk_delay_cycles" is set or not. But of_property_read_u32() doesn't touch clk_delay_cycles if the property is not set. And type of clk_delay_cycles is u32, so we may always set pdata->clk_delay_cycles as a random value. This patch fix this problem by check the return value of of_property_read_u32() to know whether the optional clk-delay-cycles is set or not. Signed-off-by: Jisheng Zhang <jszhang@...vell.com> Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org> Signed-off-by: Jiri Slaby <jslaby@...e.cz> --- drivers/mmc/host/sdhci-pxav3.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c index 793dacd3b841..561c6b4907a1 100644 --- a/drivers/mmc/host/sdhci-pxav3.c +++ b/drivers/mmc/host/sdhci-pxav3.c @@ -201,8 +201,8 @@ static struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev) if (!pdata) return NULL; - of_property_read_u32(np, "mrvl,clk-delay-cycles", &clk_delay_cycles); - if (clk_delay_cycles > 0) + if (!of_property_read_u32(np, "mrvl,clk-delay-cycles", + &clk_delay_cycles)) pdata->clk_delay_cycles = clk_delay_cycles; return pdata; -- 2.3.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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