omap: fix lots of 'Using plain integer as NULL pointer'

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Conflicts:

	arch/arm/mach-omap2/clock.c

arch/arm/mach-omap1/clock.c

@@ -201,7 +201,7 @@ static int calc_dsor_exp(struct clk *clk, unsigned long rate)
 		return -EINVAL;
 
 	parent = clk->parent;
-	if (unlikely(parent == 0))
+	if (unlikely(parent == NULL))
 		return -EIO;
 
 	realrate = parent->rate;
@@ -499,7 +499,7 @@ static int omap1_clk_enable_generic(struct clk *clk)
 	if (clk->flags & ALWAYS_ENABLED)
 		return 0;
 
-	if (unlikely(clk->enable_reg == 0)) {
+	if (unlikely(clk->enable_reg == NULL)) {
 		printk(KERN_ERR "clock.c: Enable for %s without enable code\n",
 		       clk->name);
 		return -EINVAL;
@@ -535,7 +535,7 @@ static void omap1_clk_disable_generic(struct clk *clk)
 	__u16 regval16;
 	__u32 regval32;
 
-	if (clk->enable_reg == 0)
+	if (clk->enable_reg == NULL)
 		return;
 
 	if (clk->flags & ENABLE_REG_32BIT) {
@@ -577,7 +577,7 @@ static long omap1_clk_round_rate(struct clk *clk, unsigned long rate)
 		return clk->parent->rate / (1 << dsor_exp);
 	}
 
-	if(clk->round_rate != 0)
+	if (clk->round_rate != NULL)
 		return clk->round_rate(clk, rate);
 
 	return clk->rate;

arch/arm/mach-omap2/clock.c

@@ -324,7 +324,7 @@ static int _omap2_clk_enable(struct clk *clk)
 	if (clk->enable)
 		return clk->enable(clk);
 
-	if (!clk->enable_reg) {
+	if (unlikely(clk->enable_reg == NULL)) {
 		printk(KERN_ERR "clock.c: Enable for %s without enable code\n",
 		       clk->name);
 		return 0; /* REVISIT: -EINVAL */
@@ -356,7 +356,7 @@ static void _omap2_clk_disable(struct clk *clk)
 		return;
 	}
 
-	if (!clk->enable_reg) {
+	if (clk->enable_reg == NULL) {
 		/*
 		 * 'Independent' here refers to a clock which is not
 		 * controlled by its parent.
@@ -561,7 +561,7 @@ long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate)
 /* Given a clock and a rate apply a clock specific rounding function */
 long omap2_clk_round_rate(struct clk *clk, unsigned long rate)
 {
-	if (clk->round_rate)
+	if (clk->round_rate != NULL)
 		return clk->round_rate(clk, rate);
 
 	if (clk->flags & RATE_FIXED)
@@ -650,7 +650,7 @@ u32 omap2_divisor_to_clksel(struct clk *clk, u32 div)
  */
 static void __iomem *omap2_get_clksel(struct clk *clk, u32 *field_mask)
 {
-	if (!clk->clksel_reg || (clk->clksel_mask == 0))
+	if (unlikely((clk->clksel_reg == NULL) || (clk->clksel_mask == NULL)))
 		return NULL;
 
 	*field_mask = clk->clksel_mask;
@@ -670,7 +670,7 @@ u32 omap2_clksel_get_divisor(struct clk *clk)
 	void __iomem *div_addr;
 
 	div_addr = omap2_get_clksel(clk, &field_mask);
-	if (!div_addr)
+	if (div_addr == NULL)
 		return 0;
 
 	field_val = __raw_readl(div_addr) & field_mask;
@@ -690,7 +690,7 @@ int omap2_clksel_set_rate(struct clk *clk, unsigned long rate)
 		return -EINVAL;
 
 	div_addr = omap2_get_clksel(clk, &field_mask);
-	if (!div_addr)
+	if (div_addr == NULL)
 		return -EINVAL;
 
 	field_val = omap2_divisor_to_clksel(clk, new_div);
@@ -729,7 +729,7 @@ int omap2_clk_set_rate(struct clk *clk, unsigned long rate)
 		return -EINVAL;
 
 	/* dpll_ck, core_ck, virt_prcm_set; plus all clksel clocks */
-	if (clk->set_rate)
+	if (clk->set_rate != NULL)
 		ret = clk->set_rate(clk, rate);
 
 	if (ret == 0 && (clk->flags & RATE_PROPAGATES))
@@ -791,7 +791,7 @@ int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent)
 
 	field_val = omap2_clksel_get_src_field(&src_addr, new_parent,
 					       &field_mask, clk, &parent_div);
-	if (!src_addr)
+	if (src_addr == NULL)
 		return -EINVAL;
 
 	if (clk->usecount > 0)

arch/arm/plat-omap/dma.c

@@ -1234,7 +1234,7 @@ int omap_request_dma_chain(int dev_id, const char *dev_name,
 	/* request and reserve DMA channels for the chain */
 	for (i = 0; i < no_of_chans; i++) {
 		err = omap_request_dma(dev_id, dev_name,
-					callback, 0, &channels[i]);
+					callback, NULL, &channels[i]);
 		if (err < 0) {
 			int j;
 			for (j = 0; j < i; j++)

drivers/video/omap/omapfb_main.c

@@ -761,7 +761,7 @@ static int omapfb_update_win(struct fb_info *fbi,
 	int ret;
 
 	omapfb_rqueue_lock(plane->fbdev);
-	ret = omapfb_update_window_async(fbi, win, NULL, 0);
+	ret = omapfb_update_window_async(fbi, win, NULL, NULL);
 	omapfb_rqueue_unlock(plane->fbdev);
 
 	return ret;
@@ -789,7 +789,7 @@ static int omapfb_update_full_screen(struct fb_info *fbi)
 	win.format = 0;
 
 	omapfb_rqueue_lock(fbdev);
-	r = fbdev->ctrl->update_window(fbi, &win, NULL, 0);
+	r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL);
 	omapfb_rqueue_unlock(fbdev);
 
 	return r;
@@ -1068,7 +1068,7 @@ void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
 		win.height = 2;
 		win.out_width = 2;
 		win.out_height = 2;
-		fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, 0);
+		fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL);
 	}
 	omapfb_rqueue_unlock(fbdev);
 }