sysrq, intel_fb: fix sysrq g collision

Commit 79e539453b34e35f39299a899d263b0a1f1670bd introduced a
regression where you cannot use sysrq 'g' to enter kgdb.  The solution
is to move the intel fb sysrq over to V for video instead of G for
graphics.  The SMP VOYAGER code to register for the sysrq-v is not
anywhere to be found in the mainline kernel, so the comments in the
code were cleaned up as well.

This patch also cleans up the sysrq definitions for kgdb to make it
generic for the kernel debugger, such that the sysrq 'g' can be used
in the future to enter a gdbstub or another kernel debugger.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index b0a6a3e5192490c553b449146cadc5be34690349..d6a807f4077d0453c3825d01fb1b3403f513aece 100644 (file)
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -406,7 +406,7 @@ static struct sysrq_key_op *sysrq_key_table[36] = {
        &sysrq_showlocks_op,            /* d */
        &sysrq_term_op,                 /* e */
        &sysrq_moom_op,                 /* f */
-       /* g: May be registered by ppc for kgdb */
+       /* g: May be registered for the kernel debugger */
        NULL,                           /* g */
        NULL,                           /* h - reserved for help */
        &sysrq_kill_op,                 /* i */
@@ -431,7 +431,7 @@ static struct sysrq_key_op *sysrq_key_table[36] = {
        &sysrq_sync_op,                 /* s */
        &sysrq_showstate_op,            /* t */
        &sysrq_mountro_op,              /* u */
-       /* v: May be registered at init time by SMP VOYAGER */
+       /* v: May be registered for frame buffer console restore */
        NULL,                           /* v */
        &sysrq_showstate_blocked_op,    /* w */
        /* x: May be registered on ppc/powerpc for xmon */

diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
index 3e094beecb996ff49f1c01d2b16fdcc368616dc5..e4652dcdd9bb648f585da248127199ccd816bdac 100644 (file)
--- a/drivers/gpu/drm/i915/intel_fb.c
+++ b/drivers/gpu/drm/i915/intel_fb.c
@@ -864,7 +864,7 @@ static void intelfb_sysrq(int dummy1, struct tty_struct *dummy3)
 
 static struct sysrq_key_op sysrq_intelfb_restore_op = {
         .handler = intelfb_sysrq,
-        .help_msg = "force-fb(G)",
+        .help_msg = "force-fb(V)",
         .action_msg = "Restore framebuffer console",
 };
 
@@ -898,7 +898,7 @@ int intelfb_probe(struct drm_device *dev)
                ret = intelfb_single_fb_probe(dev);
        }
 
-       register_sysrq_key('g', &sysrq_intelfb_restore_op);
+       register_sysrq_key('v', &sysrq_intelfb_restore_op);
 
        return ret;
 }

diff --git a/kernel/kgdb.c b/kernel/kgdb.c
index e4dcfb2272a4184b19903927b1c438169788461a..9147a3190c9d9b947dcbb9fe9c8e5c2dbb67c483 100644 (file)
--- a/kernel/kgdb.c
+++ b/kernel/kgdb.c
@@ -1583,8 +1583,8 @@ static void sysrq_handle_gdb(int key, struct tty_struct *tty)
 
 static struct sysrq_key_op sysrq_gdb_op = {
        .handler        = sysrq_handle_gdb,
-       .help_msg       = "Gdb",
-       .action_msg     = "GDB",
+       .help_msg       = "debug(G)",
+       .action_msg     = "DEBUG",
 };
 #endif