diff mbox

gpu: drm: mgag200: remove unnecessary variable in mga_crtc_mode_set

Message ID 20170615162740.GA19088@embeddedgus (mailing list archive)
State New, archived
Headers show

Commit Message

Gustavo A. R. Silva June 15, 2017, 4:27 p.m. UTC 
Remove unnecessary variable _misc_ and refactor the code.

A value is assigned to variable _misc_ at lines 1002 and 1004
and then overwritten at line 1127, just before it can be used.
Besides, this variable is only being used as an argument when
calling macro WREG8() and, it is not implied in any other
operation.

Addresses-Coverity-ID: 1397681
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
---
 drivers/gpu/drm/mgag200/mgag200_mode.c | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)
diff mbox

Patch

diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index adb411a..960e43b 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -923,7 +923,6 @@  static int mga_crtc_mode_set(struct drm_crtc *crtc,
 	int pitch;
 	int option = 0, option2 = 0;
 	int i;
-	unsigned char misc = 0;
 	unsigned char ext_vga[6];
 	u8 bppshift;
 
@@ -998,11 +997,6 @@  static int mga_crtc_mode_set(struct drm_crtc *crtc,
 		break;
 	}
 
-	if (mode->flags & DRM_MODE_FLAG_NHSYNC)
-		misc |= 0x40;
-	if (mode->flags & DRM_MODE_FLAG_NVSYNC)
-		misc |= 0x80;
-
 
 	for (i = 0; i < sizeof(dacvalue); i++) {
 		if ((i <= 0x17) ||
@@ -1124,8 +1118,7 @@  static int mga_crtc_mode_set(struct drm_crtc *crtc,
 		ext_vga[1] |= 0x88;
 
 	/* Set pixel clocks */
-	misc = 0x2d;
-	WREG8(MGA_MISC_OUT, misc);
+	WREG8(MGA_MISC_OUT, 0x2d);
 
 	mga_crtc_set_plls(mdev, mode->clock);
 
@@ -1145,9 +1138,7 @@  static int mga_crtc_mode_set(struct drm_crtc *crtc,
 
 	WREG_ECRT(0, ext_vga[0]);
 	/* Enable mga pixel clock */
-	misc = 0x2d;
-
-	WREG8(MGA_MISC_OUT, misc);
+	WREG8(MGA_MISC_OUT, 0x2d);
 
 	if (adjusted_mode)
 		memcpy(&mdev->mode, mode, sizeof(struct drm_display_mode));