[PATCH] mmc: rockchip_sdhci: Do not test unsigned for being less than 0

[Andrew Goodbody]

In rockchip_sdhci_execute_tuning the variable tuning_loop_counter is
tested for being less than 0. Ensure that it is a signed type by
declaring it as s8 instead of char.

This issue was found by Smatch.

Signed-off-by: Andrew Goodbody <andrew.goodbody at linaro.org>
---
 drivers/mmc/rockchip_sdhci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c
index 761e3619329..5e025d76a82 100644
--- a/drivers/mmc/rockchip_sdhci.c
+++ b/drivers/mmc/rockchip_sdhci.c
@@ -500,7 +500,7 @@ static int rockchip_sdhci_execute_tuning(struct mmc *mmc, u8 opcode)
 {
 	struct rockchip_sdhc *priv = dev_get_priv(mmc->dev);
 	struct sdhci_host *host = &priv->host;
-	char tuning_loop_counter = SDHCI_TUNING_LOOP_COUNT;
+	s8 tuning_loop_counter = SDHCI_TUNING_LOOP_COUNT;
 	struct mmc_cmd cmd;
 	u32 ctrl, blk_size;
 	int ret;

---
base-commit: 79f3e77133bd7248e4579827effc13f97a32a8a8
change-id: 20250731-mmc_rockchip-78721a751131

Best regards,
-- 
Andrew Goodbody <andrew.goodbody at linaro.org>