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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2018-02-17 23:58:43 +0300
committerWolfram Sang <wsa@the-dreams.de>2018-02-22 14:15:35 +0300
commitd1fa74520dcdbeae891b30035e6c51aafa35306d (patch)
tree1f448d5bde7c90742cdd63e2cbfc5a3cffe95854 /drivers/i2c
parentc396b9a03e3bb5e95e036bdb0c7d614e0e1a4e3d (diff)
downloadlinux-d1fa74520dcdbeae891b30035e6c51aafa35306d.tar.xz
i2c: designware: Consider SCL GPIO optional
GPIO library can return -ENOSYS for the failed request. Instead of failing ->probe() in this case override error code to 0. Fixes: ca382f5b38f3 ("i2c: designware: add i2c gpio recovery option") Reported-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-designware-master.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-designware-master.c b/drivers/i2c/busses/i2c-designware-master.c
index 55926ef41ef1..05732531829f 100644
--- a/drivers/i2c/busses/i2c-designware-master.c
+++ b/drivers/i2c/busses/i2c-designware-master.c
@@ -644,7 +644,7 @@ static int i2c_dw_init_recovery_info(struct dw_i2c_dev *dev)
gpio = devm_gpiod_get(dev->dev, "scl", GPIOD_OUT_HIGH);
if (IS_ERR(gpio)) {
r = PTR_ERR(gpio);
- if (r == -ENOENT)
+ if (r == -ENOENT || r == -ENOSYS)
return 0;
return r;
}