Replace one call to ast_io_write16() with two calls to ast_io_write8()
in ast_set_index_reg(). The combined 16-bit-wide write of an index
register and the corresponding data register only works on little-
endian systems. Write both registers independent from each other.
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
drivers/gpu/drm/ast/ast_drv.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
index d51b81fea9c8..1f46162adb64 100644
--- a/drivers/gpu/drm/ast/ast_drv.h
+++ b/drivers/gpu/drm/ast/ast_drv.h
@@ -282,7 +282,9 @@ static inline void ast_set_index_reg(struct ast_private *ast,
uint32_t base, uint8_t index,
uint8_t val)
{
- ast_io_write16(ast, base, ((u16)val << 8) | index);
+ ast_io_write8(ast, base, index);
+ ++base;
+ ast_io_write8(ast, base, val);
}
void ast_set_index_reg_mask(struct ast_private *ast,
--
2.39.2
