[PATCH v2 1/2] mmc: tmio: Check 'addr' width before checking for 64bit limitation

[Marek Vasut]

The 64bit limitation check is compiled and optimized out on 32bit
platforms, but generates a type width warning:

drivers/mmc/tmio-common.c: In function ‘tmio_sd_addr_is_dmaable’:
drivers/mmc/tmio-common.c:376:26: warning: right shift count >= width of type [-Wshift-count-overflow]
  376 |                 if (addr >> 32)
      |                          ^~

Fix the warning by checking the addr type width to see whether the
shift even makes sense in the first place. The width check is also
optimized out at compile time.

Signed-off-by: Marek Vasut <marek.vasut+renesas at mailbox.org>
---
Cc: Jaehoon Chung <jh80.chung at samsung.com>
Cc: Peng Fan <peng.fan at nxp.com>
---
V2: New patch
---
 drivers/mmc/tmio-common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/tmio-common.c b/drivers/mmc/tmio-common.c
index e9c7d3a2e00..0b24a5a7bdb 100644
--- a/drivers/mmc/tmio-common.c
+++ b/drivers/mmc/tmio-common.c
@@ -373,7 +373,7 @@ static bool tmio_sd_addr_is_dmaable(struct mmc_data *data)
 	if (!(data->flags & MMC_DATA_READ) && !IS_ALIGNED(addr, 128))
 		return false;
 	/* Gen3 DMA has 32bit limit */
-	if (addr >> 32)
+	if (sizeof(addr) > 4 && addr >> 32)
 		return false;
 #endif
 
-- 
2.39.2