fbcon: logo: disable logo at boot

Add logo.nologo kernel boot option to disable the logo in order to provide
more screen space for kernel messages; especially useful when debugging and
screen space is more critical.

newport_con driver changes are untested.

[akpm@linux-foundation.org: cleanups, coding-style fixes]
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/video/logo/logo.c b/drivers/video/logo/logo.c
index 2b0f799aa8da..a9283bae7790 100644
--- a/drivers/video/logo/logo.c
+++ b/drivers/video/logo/logo.c
@@ -34,6 +34,10 @@ extern const struct linux_logo logo_superh_vga16;
 extern const struct linux_logo logo_superh_clut224;
 extern const struct linux_logo logo_m32r_clut224;
 
+static int nologo;
+module_param(nologo, bool, 0);
+MODULE_PARM_DESC(nologo, "Disables startup logo");
+
 /* logo's are marked __initdata. Use __init_refok to tell
  * modpost that it is intended that this function uses data
  * marked __initdata.
@@ -42,6 +46,9 @@ const struct linux_logo * __init_refok fb_find_logo(int depth)
 {
         const struct linux_logo *logo = NULL;
 
+        if (nologo)
+                return NULL;
+
         if (depth >= 1) {
 #ifdef CONFIG_LOGO_LINUX_MONO
                 /* Generic Linux logo */