video imx: specify num_modes in platform_data

Without num_modes the imx fb driver won't work. Specify this
in the boards and also bail out in the driver when num_modes
is unspecified.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/boards/eukrea_cpuimx25/eukrea_cpuimx25.c

@@ -116,6 +116,7 @@ static struct imx_fb_videomode imxfb_mode = {
 
 static struct imx_fb_platform_data eukrea_cpuimx25_fb_data = {
 	.mode		= &imxfb_mode,
+	.num_modes	= 1,
 	.pwmr		= 0x00A903FF,
 	.lscr1		= 0x00120300,
 	.dmacr		= 0x80040060,

arch/arm/boards/eukrea_cpuimx27/eukrea_cpuimx27.c

@@ -116,6 +116,7 @@ static struct imx_fb_videomode imxfb_mode = {
 
 static struct imx_fb_platform_data eukrea_cpuimx27_fb_data = {
 	.mode	= &imxfb_mode,
+	.num_modes = 1,
 	.pwmr	= 0x00A903FF,
 	.lscr1	= 0x00120300,
 	.dmacr	= 0x00020010,

arch/arm/boards/guf-neso/board.c

@@ -105,6 +105,7 @@ static void neso_fb_enable(int enable)
 
 static struct imx_fb_platform_data neso_fb_data = {
 	.mode	= &imxfb_mode,
+	.num_modes = 1,
 	.pwmr	= 0x00000000,	/* doesn't matter */
 	.lscr1	= 0x00120300,	/* doesn't matter */
 	/* dynamic mode -> using the reset values (as recommended in the datasheet) */

arch/arm/boards/imx21ads/imx21ads.c

@@ -70,6 +70,7 @@ static struct imx_fb_videomode imx_fb_modedata = {
 
 static struct imx_fb_platform_data imx_fb_data = {
 	.mode           = &imx_fb_modedata,
+	.num_modes	= 1,
 	.cmap_greyscale = 0,
 	.cmap_inverse   = 0,
 	.cmap_static    = 0,

arch/arm/boards/karo-tx25/board.c

@@ -239,6 +239,7 @@ static void tx25_fb_enable(int enable)
 
 static struct imx_fb_platform_data tx25_fb_data = {
 	.mode		= &stk5_fb_mode,
+	.num_modes	= 1,
 	.dmacr		= 0x80040060,
 	.enable		= tx25_fb_enable,
 };

arch/arm/boards/pcm038/pcm038.c

@@ -104,6 +104,7 @@ static struct imx_fb_videomode imxfb_mode = {
 
 static struct imx_fb_platform_data pcm038_fb_data = {
 	.mode	= &imxfb_mode,
+	.num_modes = 1,
 	.pwmr	= 0x00A903FF,
 	.lscr1	= 0x00120300,
 	.dmacr	= 0x00020010,

drivers/video/imx.c

@@ -552,6 +552,11 @@ static int imxfb_probe(struct device_d *dev)
 	writel(readl(IMX_CCM_BASE + CCM_CGCR1) & ~(1 << 29),
 		IMX_CCM_BASE + CCM_CGCR1);
 #endif
+	if (!pdata->num_modes) {
+		dev_err(dev, "no modes. bailing out\n");
+		return -EINVAL;
+	}
+
 	mode_list = xzalloc(sizeof(*mode_list) * pdata->num_modes);
 	for (i = 0; i < pdata->num_modes; i++)
 		mode_list[i] = pdata->mode[i].mode;