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platform/chrome: wilco_ec: Provide correct output format to 'h1_gpio' file 

Function 'h1_gpio_get' is receiving 'val' parameter of type u64,
this is being passed to 'send_ec_cmd' as type u8, thus, result
is stored in least significant byte. Due to output format,
the whole 'val' value was being displayed when any of the most
significant bytes are different than zero.

This fix will make sure only least significant byte is displayed
regardless of remaining bytes value.

Signed-off-by: Bernardo Perez Priego <bernardo.perez.priego@intel.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
This commit is contained in:
Bernardo Perez Priego 2020-04-02 15:33:30 -07:00 committed by Enric Balletbo i Serra
parent 1c7c51347f
commit ad35da94b6
1 changed files with 6 additions and 1 deletions
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7
drivers/platform/chrome/wilco_ec/debugfs.c
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@ -208,7 +208,12 @@ static int send_ec_cmd(struct wilco_ec_device *ec, u8 sub_cmd, u8 *out_val)
*/
static int h1_gpio_get(void *arg, u64 *val)
{
return send_ec_cmd(arg, SUB_CMD_H1_GPIO, (u8 *)val);
int ret;
ret = send_ec_cmd(arg, SUB_CMD_H1_GPIO, (u8 *)val);
if (ret == 0)
*val &= 0xFF;
return ret;
}
DEFINE_DEBUGFS_ATTRIBUTE(fops_h1_gpio, h1_gpio_get, NULL, "0x%02llx\n");