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34 lines
1.1 KiB
34 lines
1.1 KiB
From 8341db7b05b688e8e5a93acd0e80b40be409d037 Mon Sep 17 00:00:00 2001
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From: Stephen Boyd <sboyd@codeaurora.org>
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Date: Thu, 6 Mar 2014 22:44:41 -0800
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Subject: [PATCH 027/182] pinctrl: msm: Check for ngpios > MAX_NR_GPIO
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Fail the probe and print a warning if SoC specific drivers have
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more GPIOs than there can be accounted for in the static bitmaps.
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This should avoid silent corruption/failures in the future.
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Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
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Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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---
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drivers/pinctrl/pinctrl-msm.c | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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--- a/drivers/pinctrl/pinctrl-msm.c
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+++ b/drivers/pinctrl/pinctrl-msm.c
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@@ -870,10 +870,14 @@ static int msm_gpio_init(struct msm_pinc
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int ret;
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int i;
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int r;
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+ unsigned ngpio = pctrl->soc->ngpios;
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+
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+ if (WARN_ON(ngpio > MAX_NR_GPIO))
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+ return -EINVAL;
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chip = &pctrl->chip;
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chip->base = 0;
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- chip->ngpio = pctrl->soc->ngpios;
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+ chip->ngpio = ngpio;
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chip->label = dev_name(pctrl->dev);
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chip->dev = pctrl->dev;
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chip->owner = THIS_MODULE;
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