[PATCH 6.6 406/538] Input: adp5588-keys - fix check on return code

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6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nuno Sa <nuno.sa@xxxxxxxxxx>

commit eb017f4ea13b1a5ad7f4332279f2e4c67b44bdea upstream.

During adp5588_setup(), we read all the events to clear the event FIFO.
However, adp5588_read() just calls i2c_smbus_read_byte_data() which
returns the byte read in case everything goes well. Hence, we need to
explicitly check for a negative error code instead of checking for
something different than 0.

Fixes: e960309ce318 ("Input: adp5588-keys - bail out on returned error")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Nuno Sa <nuno.sa@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240920-fix-adp5588-err-check-v1-1-81f6e957ef24@xxxxxxxxxx
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/input/keyboard/adp5588-keys.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/input/keyboard/adp5588-keys.c
+++ b/drivers/input/keyboard/adp5588-keys.c
@@ -627,7 +627,7 @@ static int adp5588_setup(struct adp5588_
 
 	for (i = 0; i < KEYP_MAX_EVENT; i++) {
 		ret = adp5588_read(client, KEY_EVENTA);
-		if (ret)
+		if (ret < 0)
 			return ret;
 	}
 






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