spi: synquacer: Fix timeout handling in synquacer_spi_transfer_one()

[ Upstream commit e6a0b671880207566e1ece983bf989dde60bc1d7 ]

wait_for_completion_timeout() never returns a <0 value. It returns either
on timeout or a positive value (at least 1, or number of jiffies left
till timeout)

So, fix the error handling path and return -ETIMEDOUT should a timeout
occur.

Fixes: 55922e05ef32 ("spi: Add spi driver for Socionext SynQuacer platform")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Jassi Brar <jaswinder.singh@linaro.org>
Link: https://lore.kernel.org/r/c2040bf3cfa201fd8890cfab14fa5a701ffeca14.1676466072.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/spi/spi-synquacer.c b/drivers/spi/spi-synquacer.c
index 1e10af6e10a90dcdc3b857f163360f3d4ab287ac..5d6e4a59ce29beeb6ec5e8059def249fad6cac94 100644 (file)
--- a/drivers/spi/spi-synquacer.c
+++ b/drivers/spi/spi-synquacer.c
@@ -472,10 +472,9 @@ static int synquacer_spi_transfer_one(struct spi_master *master,
                read_fifo(sspi);
        }
 
-       if (status < 0) {
-               dev_err(sspi->dev, "failed to transfer. status: 0x%x\n",
-                       status);
-               return status;
+       if (status == 0) {
+               dev_err(sspi->dev, "failed to transfer. Timeout.\n");
+               return -ETIMEDOUT;
        }
 
        return 0;