video: da8xx-fb rev2: fix disabling of palette completion interrupt

Writing '1' to particular bit of IRQENABLE_CLEAR register disables the
corresponding interrupt on revision 2 LCDC. This register was wrongly
configured to disable all previous enabled interrupts instead of
disabling only palette completion interrupt. Patch fixes it by clearing
only palette completion interrupt bit.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
index 034e182..7264aa3 100644 (file)
--- a/drivers/video/da8xx-fb.c
+++ b/drivers/video/da8xx-fb.c
@@ -716,7 +716,6 @@ static irqreturn_t lcdc_irq_handler_rev02(int irq, void *arg)
 {
        struct da8xx_fb_par *par = arg;
        u32 stat = lcdc_read(LCD_MASKED_STAT_REG);
-       u32 reg_int;
 
        if ((stat & LCD_SYNC_LOST) && (stat & LCD_FIFO_UNDERFLOW)) {
                lcd_disable_raster();
@@ -733,10 +732,8 @@ static irqreturn_t lcdc_irq_handler_rev02(int irq, void *arg)
 
                lcdc_write(stat, LCD_MASKED_STAT_REG);
 
-               /* Disable PL completion inerrupt */
-               reg_int = lcdc_read(LCD_INT_ENABLE_CLR_REG) |
-                      (LCD_V2_PL_INT_ENA);
-               lcdc_write(reg_int, LCD_INT_ENABLE_CLR_REG);
+               /* Disable PL completion interrupt */
+               lcdc_write(LCD_V2_PL_INT_ENA, LCD_INT_ENABLE_CLR_REG);
 
                /* Setup and start data loading mode */
                lcd_blit(LOAD_DATA, par);