[PATCH] Input: raydium_i2c_ts - do not ignore EPROBE_DEFER from gpiod_get_optional

[Dmitry Torokhov]

We should not be ignoring -EPROBE_DEFER reported by
devm_gpiod_get_optional(), but report it as any other error to the upper
layers. While we are at it simplify check for the presence of reset GPIO
and instead of using IS_ERR_OR_NULL just use boolean.

Also do not return -ENOMEM from suspend handler when the device in
bootloader mode as that does not make sense and switch to -EBUSY instead.

Reported-by: Guenter Roeck <gro...@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torok...@gmail.com>
---
 drivers/input/touchscreen/raydium_i2c_ts.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/input/touchscreen/raydium_i2c_ts.c 
b/drivers/input/touchscreen/raydium_i2c_ts.c
index 1ae65f6..f3076d9 100644
--- a/drivers/input/touchscreen/raydium_i2c_ts.c
+++ b/drivers/input/touchscreen/raydium_i2c_ts.c
@@ -930,7 +930,7 @@ static int raydium_i2c_power_on(struct raydium_data *ts)
 {
        int error;
 
-       if (IS_ERR_OR_NULL(ts->reset_gpio))
+       if (!ts->reset_gpio)
                return 0;
 
        gpiod_set_value_cansleep(ts->reset_gpio, 1);
@@ -967,7 +967,7 @@ static void raydium_i2c_power_off(void *_data)
 {
        struct raydium_data *ts = _data;
 
-       if (!IS_ERR_OR_NULL(ts->reset_gpio)) {
+       if (ts->reset_gpio) {
                gpiod_set_value_cansleep(ts->reset_gpio, 1);
                regulator_disable(ts->vccio);
                regulator_disable(ts->avdd);
@@ -1018,11 +1018,10 @@ static int raydium_i2c_probe(struct i2c_client *client,
                                                 GPIOD_OUT_LOW);
        if (IS_ERR(ts->reset_gpio)) {
                error = PTR_ERR(ts->reset_gpio);
-               if (error != -EPROBE_DEFER) {
+               if (error != -EPROBE_DEFER)
                        dev_err(&client->dev,
                                "failed to get reset gpio: %d\n", error);
-                       return error;
-               }
+               return error;
        }
 
        error = raydium_i2c_power_on(ts);
@@ -1138,7 +1137,7 @@ static int __maybe_unused raydium_i2c_suspend(struct 
device *dev)
 
        /* Sleep is not available in BLDR recovery mode */
        if (ts->boot_mode != RAYDIUM_TS_MAIN)
-               return -ENOMEM;
+               return -EBUSY;
 
        disable_irq(client->irq);
 
-- 
2.8.0.rc3.226.g39d4020


-- 
Dmitry