From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Wolfram Sang <wsa@the-dreams.de>,
linux-i2c@vger.kernel.org,
Jarkko Nikula <jarkko.nikula@linux.intel.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Tim Sander <tim@krieglstein.org>
Subject: [PATCH v1] i2c: designware: Consider SCL GPIO optional
Date: Sat, 17 Feb 2018 22:58:43 +0200 [thread overview]
Message-ID: <20180217205843.17680-1-andriy.shevchenko@linux.intel.com> (raw)
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>
Cc: Tim Sander <tim@krieglstein.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/i2c/busses/i2c-designware-master.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-designware-master.c b/drivers/i2c/busses/i2c-designware-master.c
index ae691884d071..5778908351a2 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;
}
--
2.15.1
reply other threads:[~2018-02-17 20:58 UTC|newest]
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