From: Arnd Bergmann <[email protected]>
Building this file with clang leads to a an unreachable code path
causing a warning from objtool:
drivers/spi/spi-rockchip.o: warning: objtool:
rockchip_spi_transfer_one()+0x2e0: sibling call from callable instruction with
modified stack frame
Use BUG() instead of unreachable() to avoid the undefined behavior
if it does happen.
Fixes: 65498c6ae241 ("spi: rockchip: support 4bit words")
Signed-off-by: Arnd Bergmann <[email protected]>
---
drivers/spi/spi-rockchip.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 936ef54e0903..972beac1169a 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -521,7 +521,7 @@ static void rockchip_spi_config(struct rockchip_spi *rs,
* ctlr->bits_per_word_mask, so this shouldn't
* happen
*/
- unreachable();
+ BUG();
}
if (use_dma) {
--
2.29.2
