hwrng: stm32 - rename readl return value

Use a more meaningful name for the readl return value variable.

Link: https://lore.kernel.org/all/Y1J3QwynPFIlfrIv@loth.rohan.me.apana.org.au/
Signed-off-by: Tomas Marek <tomas.marek@elrest.cz>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/char/hw_random/stm32-rng.c b/drivers/char/hw_random/stm32-rng.c
index 366edda4848b6f9485c3ff1a7f04364a983566b5..a6731cf0627ac06c7202ce1d2bca604cfae1ca07 100644 (file)
--- a/drivers/char/hw_random/stm32-rng.c
+++ b/drivers/char/hw_random/stm32-rng.c
@@ -49,13 +49,13 @@ static int stm32_rng_read(struct hwrng *rng, void *data, size_t max, bool wait)
                /* Manage timeout which is based on timer and take */
                /* care of initial delay time when enabling rng */
                if (!sr && wait) {
-                       int ret;
+                       int err;
 
-                       ret = readl_relaxed_poll_timeout_atomic(priv->base
+                       err = readl_relaxed_poll_timeout_atomic(priv->base
                                                                   + RNG_SR,
                                                                   sr, sr,
                                                                   10, 50000);
-                       if (ret)
+                       if (err)
                                dev_err((struct device *)priv->rng.priv,
                                        "%s: timeout %x!\n", __func__, sr);
                }