hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Input: Only write the CTR in i8042 resume function. Reading it is 

wrong, since it may (will) contain nonsensical data.

Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Vojtech Pavlik 2005-05-28 02:11:27 -05:00 committed by Dmitry Torokhov
parent be15692310
commit 2673c836ab
1 changed files with 28 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/input/serio/i8042.c
View File

@ -698,6 +698,26 @@ static void i8042_timer_func(unsigned long data)
i8042_interrupt(0, NULL, NULL);
}
static int i8042_ctl_test(void)
{
unsigned char param;
if (!i8042_reset)
return 0;
if (i8042_command(&param, I8042_CMD_CTL_TEST)) {
printk(KERN_ERR "i8042.c: i8042 controller self test timeout.\n");
return -1;
}
if (param != I8042_RET_CTL_TEST) {
printk(KERN_ERR "i8042.c: i8042 controller selftest failed. (%#x != %#x)\n",
param, I8042_RET_CTL_TEST);
return -1;
}
return 0;
}
/*
* i8042_controller init initializes the i8042 controller, and,
@ -719,21 +739,8 @@ static int i8042_controller_init(void)
return -1;
}
if (i8042_reset) {
unsigned char param;
if (i8042_command(&param, I8042_CMD_CTL_TEST)) {
printk(KERN_ERR "i8042.c: i8042 controller self test timeout.\n");
if (i8042_ctl_test())
return -1;
}
if (param != I8042_RET_CTL_TEST) {
printk(KERN_ERR "i8042.c: i8042 controller selftest failed. (%#x != %#x)\n",
param, I8042_RET_CTL_TEST);
return -1;
}
}
/*
* Save the CTR for restoral on unload / reboot.
@ -806,9 +813,7 @@ static void i8042_controller_reset(void)
* Reset the controller if requested.
*/
if (i8042_reset)
if (i8042_command(&param, I8042_CMD_CTL_TEST))
printk(KERN_ERR "i8042.c: i8042 controller reset timeout.\n");
i8042_ctl_test();
/*
* Disable MUX mode if present.
@ -920,8 +925,11 @@ static int i8042_resume(struct device *dev, u32 level)
if (level != RESUME_ENABLE)
return 0;
if (i8042_controller_init()) {
printk(KERN_ERR "i8042: resume failed\n");
if (i8042_ctl_test())
return -1;
if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR)) {
printk(KERN_ERR "i8042: Can't write CTR\n");
return -1;
}