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Subject[patch] Fixed not keeping shifts over VT switch
On Mon, Aug 26, 2002 at 03:14:56PM -0700, Linus Torvalds wrote:
>
> More problems with the new code: it doesn't re-compute the modifier keys
> on VT switch.
>
> Test by holding down ALT, and pressing F1/F2/F3... to walk through the
> VT's. After the first switch, it won't work any more, since the new VT
> doesn't know that ALT is still depressed.

Fixed:

You can import this changeset into BK by piping this whole message to:
'| bk receive [path to repository]' or apply the patch as usual.
'bk pull bk://linux-input.bkbits.net/linux-input' should work as well.

===================================================================

ChangeSet@1.511, 2002-08-27 02:28:38+02:00, vojtech@suse.cz
Fix bits that have fallen out when merging input-based keyboard.c
into 2.5 - kbd0 init, sysrq support, show_regs, show_mem, show_state
support, correct handling of shifts across vt switches, console
blanking, console callback. Hope that's all.

char/keyboard.c | 77 +++++++++++++++++++++++++++++++++++++++++++++-------
input/serio/i8042.c | 6 ++++
2 files changed, 74 insertions(+), 9 deletions(-)

===================================================================

diff -Nru a/drivers/char/keyboard.c b/drivers/char/keyboard.c
--- a/drivers/char/keyboard.c Tue Aug 27 02:28:59 2002
+++ b/drivers/char/keyboard.c Tue Aug 27 02:28:59 2002
@@ -40,7 +40,6 @@
#include <linux/kbd_diacr.h>
#include <linux/vt_kern.h>
#include <linux/sysrq.h>
-#include <linux/pm.h>
#include <linux/input.h>

static void kbd_disconnect(struct input_handle *handle);
@@ -50,6 +49,22 @@
* Exported functions/variables
*/

+#ifndef KBD_DEFMODE
+#define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
+#endif
+
+#ifndef KBD_DEFLEDS
+/*
+ * Some laptops take the 789uiojklm,. keys as number pad when NumLock is on.
+ * This seems a good reason to start with NumLock off.
+ */
+#define KBD_DEFLEDS 0
+#endif
+
+#ifndef KBD_DEFLOCK
+#define KBD_DEFLOCK 0
+#endif
+
struct pt_regs *kbd_pt_regs;
void compute_shiftstate(void);

@@ -94,6 +109,7 @@

struct kbd_struct kbd_table[MAX_NR_CONSOLES];
static struct kbd_struct *kbd = kbd_table;
+static struct kbd_struct kbd0;

int spawnpid, spawnsig;

@@ -124,6 +140,21 @@
unsigned char valid:1;
} ledptrs[3];

+/* Simple translation table for the SysRq keys */
+
+#ifdef CONFIG_MAGIC_SYSRQ
+unsigned char kbd_sysrq_xlate[128] =
+ "\000\0331234567890-=\177\t" /* 0x00 - 0x0f */
+ "qwertyuiop[]\r\000as" /* 0x10 - 0x1f */
+ "dfghjkl;'`\000\\zxcv" /* 0x20 - 0x2f */
+ "bnm,./\000*\000 \000\201\202\203\204\205" /* 0x30 - 0x3f */
+ "\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
+ "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
+ "\r\000/"; /* 0x60 - 0x6f */
+static int sysrq_down;
+#endif
+static int sysrq_alt;
+
/*
* Translation of scancodes to keycodes. We set them on only the first attached
* keyboard - for per-keyboard setting, /dev/input/event is more useful.
@@ -314,7 +345,7 @@
if (!key_down[i])
continue;

- k = i*BITS_PER_LONG;
+ k = i * BITS_PER_LONG;

for (j = 0; j < BITS_PER_LONG; j++, k++) {

@@ -861,8 +892,6 @@

#if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) || defined(CONFIG_MIPS) || defined(CONFIG_PPC)

-static int x86_sysrq_alt = 0;
-
static unsigned short x86_keycodes[256] =
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
@@ -902,7 +931,7 @@
return 0;
}

- if (keycode == KEY_SYSRQ && x86_sysrq_alt) {
+ if (keycode == KEY_SYSRQ && sysrq_alt) {
put_queue(vc, 0x54 | up_flag);
return 0;
}
@@ -917,9 +946,6 @@
put_queue(vc, 0x37 | up_flag);
}

- if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT)
- x86_sysrq_alt = !up_flag;
-
return 0;
}

@@ -957,10 +983,26 @@

kbd = kbd_table + fg_console;

+ if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT)
+ sysrq_alt = down;
+
+ rep = (down == 2);
+
if ((raw_mode = (kbd->kbdmode == VC_RAW)))
if (emulate_raw(vc, keycode, !down << 7))
printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", keycode);

+#ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
+ if (keycode == KEY_SYSRQ && !rep) {
+ sysrq_down = sysrq_alt && down;
+ return;
+ }
+ if (sysrq_down && down && !rep) {
+ handle_sysrq(kbd_sysrq_xlate[keycode], kbd_pt_regs, tty);
+ return;
+ }
+#endif
+
if (kbd->kbdmode == VC_MEDIUMRAW) {
/*
* This is extended medium raw mode, with keys above 127
@@ -981,7 +1023,10 @@
raw_mode = 1;
}

- rep = (down == 2);
+ if (down)
+ set_bit(keycode, key_down);
+ else
+ clear_bit(keycode, key_down);

if (rep && (!vc_kbd_mode(kbd, VC_REPEAT) || (tty &&
(!L_ECHO(tty) && tty->driver.chars_in_buffer(tty))))) {
@@ -1037,6 +1082,8 @@
return;
kbd_keycode(keycode, down);
tasklet_schedule(&keyboard_tasklet);
+ do_poke_blanked_console = 1;
+ schedule_console_callback();
}

static char kbd_name[] = "kbd";
@@ -1105,6 +1152,18 @@

int __init kbd_init(void)
{
+ int i;
+
+ kbd0.ledflagstate = kbd0.default_ledflagstate = KBD_DEFLEDS;
+ kbd0.ledmode = LED_SHOW_FLAGS;
+ kbd0.lockstate = KBD_DEFLOCK;
+ kbd0.slockstate = 0;
+ kbd0.modeflags = KBD_DEFMODE;
+ kbd0.kbdmode = VC_XLATE;
+
+ for (i = 0 ; i < MAX_NR_CONSOLES ; i++)
+ kbd_table[i] = kbd0;
+
tasklet_enable(&keyboard_tasklet);
tasklet_schedule(&keyboard_tasklet);
input_register_handler(&kbd_handler);
diff -Nru a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
--- a/drivers/input/serio/i8042.c Tue Aug 27 02:28:59 2002
+++ b/drivers/input/serio/i8042.c Tue Aug 27 02:28:59 2002
@@ -61,6 +61,8 @@
static unsigned long i8042_start;
#endif

+extern struct pt_regs *kbd_pt_regs;
+
static unsigned long i8042_unxlate_seen[128 / BITS_PER_LONG];
static unsigned char i8042_unxlate_table[128] = {
0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
@@ -345,6 +347,10 @@
unsigned long flags;
unsigned char str, data;
unsigned int dfl;
+
+#ifdef CONFIG_VT
+ kbd_pt_regs = regs;
+#endif

spin_lock_irqsave(&i8042_lock, flags);

===================================================================
This BitKeeper patch contains the following changesets:
+
## Wrapped with gzip_uu ##


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`
end
--
Vojtech Pavlik
SuSE Labs
-
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