From b358c6cf029cb67b3ed9cc367fb46f1fa3228c5b Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 30 Apr 2013 10:44:51 +0300 Subject: fbdev/ps3fb: fix compile warning Commit 11bd5933abe0 ("fbdev/ps3fb: use vm_iomap_memory()") introduced the following warning: drivers/video/ps3fb.c: In function 'ps3fb_mmap': drivers/video/ps3fb.c:712:2: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] Fix this by adding the parentheses. Signed-off-by: Tomi Valkeinen --- drivers/video/ps3fb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c index d9f08c653d6..dbfe2c18a43 100644 --- a/drivers/video/ps3fb.c +++ b/drivers/video/ps3fb.c @@ -710,7 +710,7 @@ static int ps3fb_mmap(struct fb_info *info, struct vm_area_struct *vma) r = vm_iomap_memory(vma, info->fix.smem_start, info->fix.smem_len); dev_dbg(info->device, "ps3fb: mmap framebuffer P(%lx)->V(%lx)\n", - info->fix.smem_start + vma->vm_pgoff << PAGE_SHIFT, + info->fix.smem_start + (vma->vm_pgoff << PAGE_SHIFT), vma->vm_start); return r; -- cgit v1.2.3 From 591a0ac7f14aae6bf11b1cb6b5a68480bd644ddb Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Thu, 23 May 2013 12:07:50 +0300 Subject: OMAPDSS: Fix crash with DT boot When booting with DT, there's a crash when omapfb is probed. This is caused by the fact that omapdss+DT is not yet supported, and thus omapdss is not probed at all. On the other hand, omapfb is always probed. When omapfb tries to use omapdss, there's a NULL pointer dereference crash. The same error should most likely happen with omapdrm and omap_vout also. To fix this, add an "initialized" state to omapdss. When omapdss has been probed, it's marked as initialized. omapfb, omapdrm and omap_vout check this state when they are probed to see that omapdss is actually there. Signed-off-by: Tomi Valkeinen Tested-by: Peter Ujfalusi --- drivers/gpu/drm/omapdrm/omap_drv.c | 3 +++ drivers/media/platform/omap/omap_vout.c | 3 +++ drivers/video/omap2/dss/core.c | 20 +++++++++++++++++++- drivers/video/omap2/omapfb/omapfb-main.c | 3 +++ 4 files changed, 28 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c index 079c54c6f94..902074bbd1f 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.c +++ b/drivers/gpu/drm/omapdrm/omap_drv.c @@ -548,6 +548,9 @@ static void pdev_shutdown(struct platform_device *device) static int pdev_probe(struct platform_device *device) { + if (omapdss_is_initialized() == false) + return -EPROBE_DEFER; + DBG("%s", device->name); return drm_platform_init(&omap_drm_driver, device); } diff --git a/drivers/media/platform/omap/omap_vout.c b/drivers/media/platform/omap/omap_vout.c index 96c4a17e428..0a489bd29d6 100644 --- a/drivers/media/platform/omap/omap_vout.c +++ b/drivers/media/platform/omap/omap_vout.c @@ -2144,6 +2144,9 @@ static int __init omap_vout_probe(struct platform_device *pdev) struct omap_dss_device *def_display; struct omap2video_device *vid_dev = NULL; + if (omapdss_is_initialized() == false) + return -EPROBE_DEFER; + ret = omapdss_compat_init(); if (ret) { dev_err(&pdev->dev, "failed to init dss\n"); diff --git a/drivers/video/omap2/dss/core.c b/drivers/video/omap2/dss/core.c index f8779d4750b..f49ddb9e7c8 100644 --- a/drivers/video/omap2/dss/core.c +++ b/drivers/video/omap2/dss/core.c @@ -53,6 +53,8 @@ static char *def_disp_name; module_param_named(def_disp, def_disp_name, charp, 0); MODULE_PARM_DESC(def_disp, "default display name"); +static bool dss_initialized; + const char *omapdss_get_default_display_name(void) { return core.default_display_name; @@ -66,6 +68,12 @@ enum omapdss_version omapdss_get_version(void) } EXPORT_SYMBOL(omapdss_get_version); +bool omapdss_is_initialized(void) +{ + return dss_initialized; +} +EXPORT_SYMBOL(omapdss_is_initialized); + struct platform_device *dss_get_core_pdev(void) { return core.pdev; @@ -606,6 +614,8 @@ static int __init omap_dss_init(void) return r; } + dss_initialized = true; + return 0; } @@ -636,7 +646,15 @@ static int __init omap_dss_init(void) static int __init omap_dss_init2(void) { - return omap_dss_register_drivers(); + int r; + + r = omap_dss_register_drivers(); + if (r) + return r; + + dss_initialized = true; + + return 0; } core_initcall(omap_dss_init); diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c index 717f13a9335..bb5f9fee365 100644 --- a/drivers/video/omap2/omapfb/omapfb-main.c +++ b/drivers/video/omap2/omapfb/omapfb-main.c @@ -2416,6 +2416,9 @@ static int __init omapfb_probe(struct platform_device *pdev) DBG("omapfb_probe\n"); + if (omapdss_is_initialized() == false) + return -EPROBE_DEFER; + if (pdev->num_resources != 0) { dev_err(&pdev->dev, "probed for an unknown device\n"); r = -ENODEV; -- cgit v1.2.3