W dniu 2015-08-31 o 16:26, Janusz Użycki pisze:
Hi,
The driver sets register #02 (inversion) to 0x01 instead of 0x00 on my
board.
Reason: device_pca953x_init() does not initialize val buffer because
NBANK() returns
for PCA9536 ngpio=4 value 0 instead of 1.
My proposed code-patch for 3.14.17 is below.
Because I don't work on stable/next I can't deliver complete/ready patch.
Please for comments.
best regards
Janusz
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -75,7 +75,7 @@ MODULE_DEVICE_TABLE(i2c, pca953x_id);
#define MAX_BANK 5
#define BANK_SZ 8
-#define NBANK(chip) (chip->gpio_chip.ngpio / BANK_SZ)
+#define NBANK(chip) DIV_ROUND_UP(chip->gpio_chip.ngpio, BANK_SZ)
struct pca953x_chip {
unsigned gpio_start;
--
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