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gpio: pca953x: enfore type for i2c_smbus_write_word_data()

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The commit 9b8e3ec34318 ("gpio: pca953x: Use correct u16 value for register
word write") fixed regression in pca953x_write_regs(). At the same time the
solution introduced a sparse warning:

drivers/gpio/gpio-pca953x.c:168:39: warning: incorrect type in argument 3 (different base types)
drivers/gpio/gpio-pca953x.c:168:39:    expected unsigned short [unsigned] [usertype] value
drivers/gpio/gpio-pca953x.c:168:39:    got restricted __le16 [usertype] <noident>

Fix the code by enforcing the type of i2c_smbus_write_word_data() parameter.

Cc: Yong Li <sdliyong@gmail.com>
Cc: Phil Reid <preid@electromag.com.au>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Andy Shevchenko 2016-05-31 22:03:43 +03:00 committed by Linus Walleij
parent 0ee3741499
commit c4d1cbd7cf
1 changed files with 6 additions and 3 deletions
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9
drivers/gpio/gpio-pca953x.c
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@ -163,10 +163,13 @@ static int pca953x_write_regs(struct pca953x_chip *chip, int reg, u8 *val)
NBANK(chip), val);
} else {
switch (chip->chip_type) {
case PCA953X_TYPE:
ret = i2c_smbus_write_word_data(chip->client,
reg << 1, cpu_to_le16(get_unaligned((u16 *)val)));
case PCA953X_TYPE: {
__le16 word = cpu_to_le16(get_unaligned((u16 *)val));
ret = i2c_smbus_write_word_data(chip->client, reg << 1,
(__force u16)word);
break;
}
case PCA957X_TYPE:
ret = i2c_smbus_write_byte_data(chip->client, reg << 1,
val[0]);