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linux/drivers/char
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Antonino A. Daplas 3b41dc1a3c [PATCH] console: Fix buffer copy on vc resize 
On a vc resize, the contents of the old screen buffer are transferred to the
new screenbuffer.  If the new screenbuffer is smaller than the old one, only
the contents from the bottom are copied to new.  If the contents of the old
buffer are located at the top, then the contents will not be copied to the new
buffer resulting in a blank screen.

This bug will happen only if the vc in question is not in the foreground.
Doing an fbset -a or con2fbmap will trigger this bug.

To fix this problem, base the start of the copy from the location of the
current cursor.  If the cursor is near the top of the buffer, copy the
contents at the top, and if the cursor is near the bottom of the buffer, then
copy the contents at the bottom.  In the unlikely case where the new row size
is greater than 2x smaller than the old one, and the cursor is in the middle,
copy 1/2 screenful from the top and bottom of the cursor position.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:58:00 -07:00
..
agp [AGPGART] Remove trailing space before \n 2005-09-01 10:50:13 -07:00
drm [PATCH] PCI: remove CONFIG_PCI_NAMES 2005-09-08 14:57:23 -07:00
ftape [PATCH] printk: drivers/char/ftape/compressor/zftape-compress.c 2005-06-25 16:25:02 -07:00
ip2 [PATCH] drivers/char/ip2*: cleanups 2005-06-25 16:25:06 -07:00
ipmi Merge linux-2.6 with linux-acpi-2.6 2005-09-08 01:45:47 -04:00
mwave [SERIAL] Convert mwave to use serial8250_(un)?register_port 2005-08-31 22:19:33 +01:00
pcmcia [PATCH] pcmcia: remove references to pcmcia/version.h 2005-07-07 18:24:07 -07:00
rio [PATCH] turn many #if $undefined_string into #ifdef $undefined_string 2005-07-27 16:26:08 -07:00
tpm Merge linux-2.6 with linux-acpi-2.6 2005-09-08 01:45:47 -04:00
watchdog Merge watchdog driver updates 2005-09-05 06:00:45 -07:00
amiserial.c [PATCH] Serial: remove unnecessary register_serial/unregister_serial 2005-06-25 16:24:25 -07:00
applicom.c [PATCH] printk: drivers/char/applicom.c 2005-06-25 16:25:01 -07:00
applicom.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cd1865.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ChangeLog Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
consolemap.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cp437.uni Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cyclades.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
decserial.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
defkeymap.c_shipped Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
defkeymap.map Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
digi1.h [PATCH] Clean up the old digi support and rescue it 2005-09-07 16:57:20 -07:00
digi.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
digiFep1.h [PATCH] Clean up the old digi support and rescue it 2005-09-07 16:57:20 -07:00
digiPCI.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ds1286.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ds1302.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ds1620.c [PATCH] char/ds1620: use msleep() instead of schedule_timeout() 2005-06-25 16:24:57 -07:00
dsp56k.c [PATCH] class: convert drivers/char/* to use the new class api instead of class_simple 2005-06-20 15:15:08 -07:00
dtlk.c [PATCH] misc verify_area cleanups 2005-05-01 08:59:08 -07:00
ec3104_keyb.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
efirtc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
epca.c [PATCH] Clean up the old digi support and rescue it 2005-09-07 16:57:20 -07:00
epca.h [PATCH] Clean up the old digi support and rescue it 2005-09-07 16:57:20 -07:00
epcaconfig.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
esp.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
generic_nvram.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
generic_serial.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
genrtc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hangcheck-timer.c [PATCH] In hangcheck-timer.c call emergency_restart() 2005-07-26 14:35:44 -07:00
hpet.c Merge linux-2.6 with linux-acpi-2.6 2005-09-08 01:45:47 -04:00
hvc_console.c [PATCH] hvc_console: Register ops when setting up hvc_console 2005-07-07 18:23:39 -07:00
hvc_vio.c [PATCH] Make MODULE_DEVICE_TABLE work for vio devices 2005-08-30 13:31:56 +10:00
hvcs.c [PATCH] Make MODULE_DEVICE_TABLE work for vio devices 2005-08-30 13:31:56 +10:00
hvsi.c [PATCH] hvc_console: Use hvc_get_chars in hvsi code 2005-07-07 18:23:40 -07:00
hw_random.c [PATCH] PCI: clean up dynamic pci id logic 2005-07-01 13:35:50 -07:00
i8k.c [PATCH] I8K: add new BIOS signatures 2005-06-25 16:24:25 -07:00
ip2.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ip2main.c [PATCH] gratuitous includes of asm/serial.h 2005-09-09 10:31:58 -07:00
ip27-rtc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
isicom.c [PATCH] drivers/char/isicom.c: section fixes 2005-06-25 16:25:00 -07:00
istallion.c [PATCH] drivers/char/istallion.c: remove an unneeded variable 2005-06-25 16:25:03 -07:00
ite_gpio.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Kconfig [PATCH] gratuitous includes of asm/serial.h 2005-09-09 10:31:58 -07:00
keyboard.c Input: check keycodesize when adjusting keymaps 2005-07-24 00:50:03 -05:00
lcd.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
lcd.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
lp.c [PATCH] class: convert drivers/char/* to use the new class api instead of class_simple 2005-06-20 15:15:08 -07:00
Makefile [PATCH] hvc_console: Separate hvc_console and vio code 2 2005-07-07 18:23:39 -07:00
mbcs.c [PATCH] drivers: convert kcalloc to kzalloc 2005-09-07 16:57:46 -07:00
mbcs.h [PATCH] mbcs trivial user annotations 2005-05-04 07:33:13 -07:00
mem.c [PATCH] remove a dead extern in mem.c 2005-09-07 16:57:23 -07:00
misc.c [PATCH] move m68k rtc drivers over to initcalls 2005-09-07 16:57:23 -07:00
mmtimer.c [PATCH] mmtimer build fix 2005-04-16 15:23:53 -07:00
moxa.c [SERIAL] Fix moxa tty driver name 2005-09-03 16:26:49 +01:00
mxser.c [MOXA]: Fix this driver properly. 2005-09-05 23:30:15 -07:00
mxser.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
n_hdlc.c [PATCH] Convert users to tty_unregister_ldisc() 2005-06-23 09:45:36 -07:00
n_r3964.c [PATCH] Convert users to tty_unregister_ldisc() 2005-06-23 09:45:36 -07:00
n_tty.c [PATCH] tty output lossage fix 2005-07-07 18:23:45 -07:00
nvram.c [PATCH] drivers/char/nvram.c: possible cleanups 2005-06-25 16:25:03 -07:00
nwbutton.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nwbutton.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nwflash.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ppdev.c [PATCH] class: convert drivers/char/* to use the new class api instead of class_simple 2005-06-20 15:15:08 -07:00
pty.c [PATCH] pty_chars_in_buffer oops fix 2005-09-09 13:57:31 -07:00
qtronix.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
qtronixmap.c_shipped Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
qtronixmap.map Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
random.c [RANDOM]: Introduce secure_dccp_sequence_number 2005-08-29 15:49:40 -07:00
raw.c [PATCH] class: convert drivers/char/* to use the new class api instead of class_simple 2005-06-20 15:15:08 -07:00
riscom8_reg.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
riscom8.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
riscom8.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rocket_int.h [PATCH] drivers/char/rocket.c: cleanups 2005-06-25 16:25:04 -07:00
rocket.c [PATCH] rocket.c: Fix ldisc ref count handling 2005-07-15 09:54:51 -07:00
rocket.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rtc.c [RTC]: Use SA_SHIRQ in sparc specific code. 2005-09-05 23:33:05 -07:00
s3c2410-rtc.c [PATCH] ARM: RTC: allow driver methods to return error 2005-04-30 12:19:28 +01:00
scan_keyb.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
scan_keyb.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
scc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
scx200_gpio.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
selection.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ser_a2232.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ser_a2232.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ser_a2232fw.ax Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ser_a2232fw.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
serial167.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
snsc_event.c [IA64-SGI] fix unaligned memory access in snsc_event.c 2005-08-15 14:17:49 -07:00
snsc.c [PATCH] Fix typo in scdrv_init() 2005-06-20 15:15:27 -07:00
snsc.h [IA64] Altix system controller event handling 2005-04-25 13:28:52 -07:00
sonypi.c [PATCH] sonypi: remove obsolete event 2005-09-07 16:57:24 -07:00
specialix_io8.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
specialix.c [PATCH] misc verify_area cleanups 2005-05-01 08:59:08 -07:00
stallion.c [PATCH] class: convert drivers/char/* to use the new class api instead of class_simple 2005-06-20 15:15:08 -07:00
sx.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sx.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sxboards.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sxwindow.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
synclink.c [PATCH] synclink.c: add loopback to async mode 2005-09-09 13:57:34 -07:00
synclinkmp.c [PATCH] synclinkmp.c: fix async internal loopback 2005-09-09 13:57:35 -07:00
sysrq.c [PATCH] Update sysrq-B to use emergency_restart() 2005-07-26 14:35:43 -07:00
tb0219.c [PATCH] TB0219: add PCI IRQ initialization 2005-07-12 16:01:02 -07:00
tipar.c [PATCH] drivers/char/tipar.c: off by one array access 2005-06-28 21:20:29 -07:00
toshiba.c [PATCH] Toshiba driver cleanup 2005-06-25 16:24:24 -07:00
tty_io.c [PATCH] files: lock-free fd look-up 2005-09-09 13:57:55 -07:00
tty_ioctl.c [PATCH] coverity: tty_ldisc_ref return null check 2005-06-28 21:20:34 -07:00
vc_screen.c [PATCH] class: convert drivers/char/* to use the new class api instead of class_simple 2005-06-20 15:15:08 -07:00
viocons.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
viotape.c [PATCH] Make MODULE_DEVICE_TABLE work for vio devices 2005-08-30 13:31:56 +10:00
vme_scc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vr41xx_giu.c [PATCH] mips: add vr41xx gpio support 2005-06-21 18:46:32 -07:00
vr41xx_rtc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vt_ioctl.c [PATCH] Adapt drivers/char/vt_ioctl.c to non-x86 2005-06-28 21:20:30 -07:00
vt.c [PATCH] console: Fix buffer copy on vc resize 2005-09-09 13:58:00 -07:00