Switch to kmalloc(,GFP_ATOMIC) in bit_putcs to fix below trace:
[ 9.771812] BUG: sleeping function called from invalid context at /usr/src/linux-git/mm/slub.c:943
[ 9.771814] in_atomic(): 1, irqs_disabled(): 1, pid: 1063, name: mount
[ 9.771818] Pid: 1063, comm: mount Not tainted
3.5.0-jupiter-00003-g8d858b1-dirty #2
[ 9.771819] Call Trace:
[ 9.771838] [<
c104f79b>] __might_sleep+0xcb/0xe0
[ 9.771844] [<
c10c00d4>] __kmalloc+0xb4/0x1c0
[ 9.771851] [<
c1041d4a>] ? queue_work+0x1a/0x30
[ 9.771854] [<
c1041dcf>] ? queue_delayed_work+0xf/0x30
[ 9.771862] [<
c1205832>] ? bit_putcs+0xf2/0x3e0
[ 9.771865] [<
c1041e01>] ? schedule_delayed_work+0x11/0x20
[ 9.771868] [<
c1205832>] bit_putcs+0xf2/0x3e0
[ 9.771875] [<
c12002b8>] ? get_color.clone.14+0x28/0x100
[ 9.771878] [<
c1200d2f>] fbcon_putcs+0x11f/0x130
[ 9.771882] [<
c1205740>] ? bit_clear+0xe0/0xe0
[ 9.771885] [<
c1200f6d>] fbcon_redraw.clone.21+0x11d/0x160
[ 9.771889] [<
c120383d>] fbcon_scroll+0x79d/0xe10
[ 9.771892] [<
c12002b8>] ? get_color.clone.14+0x28/0x100
[ 9.771897] [<
c124c0b4>] scrup+0x64/0xd0
[ 9.771900] [<
c124c22b>] lf+0x2b/0x60
[ 9.771903] [<
c124cc95>] vt_console_print+0x1d5/0x2f0
[ 9.771907] [<
c124cac0>] ? register_vt_notifier+0x20/0x20
[ 9.771913] [<
c102b335>] call_console_drivers.clone.5+0xa5/0xc0
[ 9.771916] [<
c102c58e>] console_unlock+0x2fe/0x3c0
[ 9.771920] [<
c102ca16>] vprintk_emit+0x2e6/0x300
[ 9.771924] [<
c13f01ae>] printk+0x38/0x3a
[ 9.771931] [<
c112e8fe>] reiserfs_remount+0x2ae/0x3e0
[ 9.771934] [<
c112e650>] ? reiserfs_fill_super+0xb00/0xb00
[ 9.771939] [<
c10ca0ab>] do_remount_sb+0xab/0x150
[ 9.771943] [<
c1034476>] ? ns_capable+0x46/0x70
[ 9.771948] [<
c10e059c>] do_mount+0x20c/0x6b0
[ 9.771955] [<
c10a7044>] ? strndup_user+0x34/0x50
[ 9.771958] [<
c10e0acc>] sys_mount+0x6c/0xa0
[ 9.771964] [<
c13f2557>] sysenter_do_call+0x12/0x26
According to comment in bit_putcs() that kammloc() call only happens
when fbcon is drawing to a monochrome framebuffer (which is my case with
hid-picolcd).
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>