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authorRashmica Gupta <rashmica.g@gmail.com>2019-09-06 16:26:22 +1000
committerLinus Walleij <linus.walleij@linaro.org>2019-09-11 11:04:55 +0100
commit3c4710ae6f883f9c6e3df5e27e274702a1221c57 (patch)
treefce94c43e42f2e93715fabb2d3c16cbb031f96d8 /drivers/gpio
parentda04c425e9f738d7d143f509d519e1eaa4b5c2d6 (diff)
downloadlinux-3c4710ae6f883f9c6e3df5e27e274702a1221c57.tar.bz2
gpio/aspeed: Fix incorrect number of banks
The current calculation for the number of GPIO banks is only correct if the number of GPIOs is a multiple of 32 (if there were 31 GPIOs we would currently say there are 0 banks, which is incorrect). Fixes: 361b79119a4b7 ('gpio: Add Aspeed driver') Signed-off-by: Rashmica Gupta <rashmica.g@gmail.com> Reviewed-by: Andrew Jeffery <andrew@aj.id.au> Link: https://lore.kernel.org/r/20190906062623.13354-1-rashmica.g@gmail.com Reviewed-by: Joel Stanley <joel@jms.d.au> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-aspeed.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
index 7bcd83dbc3e3..854ed3bc66a7 100644
--- a/drivers/gpio/gpio-aspeed.c
+++ b/drivers/gpio/gpio-aspeed.c
@@ -1168,7 +1168,7 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev)
gpio->chip.base = -1;
/* Allocate a cache of the output registers */
- banks = gpio->config->nr_gpios >> 5;
+ banks = DIV_ROUND_UP(gpio->config->nr_gpios, 32);
gpio->dcache = devm_kcalloc(&pdev->dev,
banks, sizeof(u32), GFP_KERNEL);
if (!gpio->dcache)