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gpio: pca953x: Fix NBANK calculation for PCA9536
authorVignesh R <vigneshr@ti.com>
Thu, 9 Jun 2016 05:32:04 +0000 (11:02 +0530)
committerLinus Walleij <linus.walleij@linaro.org>
Mon, 13 Jun 2016 07:21:28 +0000 (09:21 +0200)
commita246b8198f776a16d1d3a3bbfc2d437bad766b29
tree706415a262cac9849cf7134e5831d9e4d31ba57dtree | snapshot (tar.gz zip)
parentc0d30ecfe2f3e2254234d055982536fac18c7f1ccommit | diff
gpio: pca953x: Fix NBANK calculation for PCA9536

NBANK() macro assumes that ngpios is a multiple of 8(BANK_SZ) and
hence results in 0 banks for PCA9536 which has just 4 gpios. This is
wrong as PCA9356 has 1 bank with 4 gpios. This results in uninitialized
PCA953X_INVERT register. Fix this by using DIV_ROUND_UP macro in
NBANK().

Cc: stable@vger.kernel.org
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
drivers/gpio/gpio-pca953x.c diff | blob | blame | history
Motorola kernel-slsi