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SubjectRe: [PATCH] fix for drivers/char/pc_keyb.c in 2.5.1-pre3
Date
From
> Here's a patch for 2.5.1-pre3 to fix the compile time problems in
> drivers/char/pc_keyb.c. It also fixes the places where the flags
> variable is the wrong type.

This is the diff I'm using. It

- Fixes the initrd lock
- Fixes keyboard (as with Greg but with the formatting unmangled too)
- Fixes wdt_pci (bitops on it)
- Makes wdt use the same locking as wdt_pci
- Returns pc110pad to the coding style and redoes the locks to
kill old style locking totally

diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.1p3/drivers/block/rd.c linux.ac/drivers/block/rd.c
--- linux.1p3/drivers/block/rd.c Thu Nov 29 01:18:32 2001
+++ linux.ac/drivers/block/rd.c Thu Nov 29 01:41:37 2001
@@ -409,13 +409,13 @@
{
extern void free_initrd_mem(unsigned long, unsigned long);

- spin_lock( &initrd_users_lock );
+ spin_lock(&initrd_users_lock);
if (!--initrd_users) {
- spin_unlock( &initrd_users_lock );
+ spin_unlock(&initrd_users_lock);
free_initrd_mem(initrd_start, initrd_end);
initrd_start = 0;
} else {
- spin_unlock( &initrd_users_lock );
+ spin_unlock(&initrd_users_lock);
}

blkdev_put(inode->i_bdev, BDEV_FILE);
@@ -437,10 +437,11 @@

#ifdef CONFIG_BLK_DEV_INITRD
if (unit == INITRD_MINOR) {
- spin_lock( &initrd_users_lock );
+ spin_lock(&initrd_users_lock);
initrd_users++;
- if (!initrd_start) return -ENODEV;
- spin_unlock( &initrd_users_lock );
+ spin_unlock(&initrd_users_lock);
+ if (!initrd_start)
+ return -ENODEV;
filp->f_op = &initrd_fops;
return 0;
}
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.1p3/drivers/char/pc110pad.c linux.ac/drivers/char/pc110pad.c
--- linux.1p3/drivers/char/pc110pad.c Thu Nov 29 01:18:32 2001
+++ linux.ac/drivers/char/pc110pad.c Thu Nov 29 01:39:21 2001
@@ -68,8 +68,8 @@
/* driver/filesystem interface management */
static wait_queue_head_t queue;
static struct fasync_struct *asyncptr;
-static active_count = 0; /* number of concurrent open()s */
-static spinlock_t active_lock = SPIN_LOCK_UNLOCKED;
+static int active_count = 0; /* number of concurrent open()s */
+static spinlock_t pc110_lock = SPIN_LOCK_UNLOCKED;
/* this lock should be held when referencing active_count */
static struct semaphore reader_lock;

@@ -482,15 +482,14 @@
int thisd, thisdd, thisx, thisy;
int b;
unsigned long flags;
-
- save_flags(flags);
- cli();
+
+ spin_lock_irqsave(&pc110_lock, flags);
read_raw_pad(&thisd, &thisdd, &thisx, &thisy);
d[0]=(thisd?0x80:0) | (thisdd?0x40:0) | bounce;
d[1]=(recent_transition?0x80:0)+transition_count;
read_button(&b);
d[2]=(synthesize_tap<<4) | (b?0x01:0);
- restore_flags(flags);
+ spin_unlock_irqrestore(&pc110_lock, flags);
}

/**
@@ -586,11 +585,12 @@

static int close_pad(struct inode * inode, struct file * file)
{
+ unsigned long flags;
fasync_pad(-1, file, 0);
- spin_lock( &active_lock );
+ spin_lock_irqsave(&pc110_lock, flags);
if (!--active_count)
outb(0x30, current_params.io+2); /* switch off digitiser */
- spin_unlock( &active_lock );
+ spin_unlock_irqrestore(&active_lock, flags);
return 0;
}

@@ -610,16 +610,13 @@
{
unsigned long flags;

- spin_lock( &active_lock );
+ spin_lock_irqsave(&pc110_lock, flags);
if (active_count++)
{
- spin_unlock( &active_lock );
+ spin_unlock_irqrestore(&pc110_lock, flags);
return 0;
}
- spin_unlock( &active_lock );

- save_flags(flags);
- cli();
outb(0x30, current_params.io+2); /* switch off digitiser */
pad_irq(0,0,0); /* read to flush any pending bytes */
pad_irq(0,0,0); /* read to flush any pending bytes */
@@ -634,7 +631,7 @@
synthesize_tap=0;
del_timer(&bounce_timer);
del_timer(&tap_timer);
- restore_flags(flags);
+ spin_unlock_irqrestore(&pc110_lock, flags);

return 0;
}
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.1p3/drivers/char/pc_keyb.c linux.ac/drivers/char/pc_keyb.c
--- linux.1p3/drivers/char/pc_keyb.c Thu Nov 29 01:18:32 2001
+++ linux.ac/drivers/char/pc_keyb.c Thu Nov 29 01:44:51 2001
@@ -406,7 +406,7 @@

if (rqst == PM_RESUME) {
if (queue) { /* Aux port detected */
- spin_lock_irqsave( &aux_count_lock, flags);
+ spin_lock_irqsave(&aux_count_lock, flags);
if ( aux_count == 0) { /* Mouse not in use */
spin_lock(&kbd_controller_lock);
/*
@@ -420,9 +420,9 @@
kbd_write_command(KBD_CCMD_WRITE_MODE);
kb_wait();
kbd_write_output(AUX_INTS_OFF);
- spin_unlock(&kbd_controller_lock, flags);
+ spin_unlock(&kbd_controller_lock);
}
- spin_unlock_irqrestore( &aux_count_lock,flags );
+ spin_unlock_irqrestore(&aux_count_lock, flags);
}
}
#endif
@@ -433,7 +433,7 @@
static inline void handle_mouse_event(unsigned char scancode)
{
#ifdef CONFIG_PSMOUSE
- int flags;
+ unsigned long flags;
static unsigned char prev_code;
if (mouse_reply_expected) {
if (scancode == AUX_ACK) {
@@ -452,7 +452,7 @@

prev_code = scancode;
add_mouse_randomness(scancode);
- spin_lock_irqsave( &aux_count_lock, flags);
+ spin_lock_irqsave(&aux_count_lock, flags);
if ( aux_count ) {
int head = queue->head;

@@ -464,7 +464,7 @@
wake_up_interruptible(&queue->proc_list);
}
}
- spin_unlock_irqrestore( &aux_count_lock, flags);
+ spin_unlock_irqrestore(&aux_count_lock, flags);
#endif
}

@@ -1052,14 +1052,14 @@

static int release_aux(struct inode * inode, struct file * file)
{
- int flags;
+ unsigned long flags;
fasync_aux(-1, file, 0);
- spin_lock_irqsave( &aux_count, flags );
+ spin_lock_irqsave(&aux_count, flags);
if ( --aux_count ) {
- spin_unlock_irqrestore( &aux_count_lock );
+ spin_unlock_irqrestore(&aux_count_lock, flags);
return 0;
}
- spin_unlock_irqrestore( &aux_count_lock, flags );
+ spin_unlock_irqrestore(&aux_count_lock, flags);
kbd_write_cmd(AUX_INTS_OFF); /* Disable controller ints */
kbd_write_command_w(KBD_CCMD_MOUSE_DISABLE);
aux_free_irq(AUX_DEV);
@@ -1073,16 +1073,16 @@

static int open_aux(struct inode * inode, struct file * file)
{
- int flags;
- spin_lock_irqsave( &aux_count_lock, flags );
+ unsigned long flags;
+ spin_lock_irqsave(&aux_count_lock, flags);
if ( aux_count++ ) {
- spin_unlock_irqrestore( &aux_count_lock );
+ spin_unlock_irqrestore(&aux_count_lock, flags);
return 0;
}
queue->head = queue->tail = 0; /* Flush input queue */
if (aux_request_irq(keyboard_interrupt, AUX_DEV)) {
aux_count--;
- spin_unlock_irqrestore( &aux_count_lock, flags );
+ spin_unlock_irqrestore(&aux_count_lock, flags);
return -EBUSY;
}
kbd_write_command_w(KBD_CCMD_MOUSE_ENABLE); /* Enable the
@@ -1094,7 +1094,7 @@
mdelay(2); /* Ensure we follow the kbc access delay rules.. */

send_data(KBD_CMD_ENABLE); /* try to workaround toshiba4030cdt problem */
- spin_unlock_irqrestore( &aux_count_lock, flags );
+ spin_unlock_irqrestore(&aux_count_lock, flags);
return 0;
}

diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.1p3/drivers/char/wdt.c linux.ac/drivers/char/wdt.c
--- linux.1p3/drivers/char/wdt.c Thu Nov 29 01:18:32 2001
+++ linux.ac/drivers/char/wdt.c Thu Nov 29 01:22:32 2001
@@ -50,7 +50,7 @@
#include <linux/reboot.h>
#include <linux/init.h>

-static int wdt_is_open;
+static unsigned long wdt_is_open;

/*
* You must set these - there is no sane way to probe for this board.
@@ -337,13 +337,12 @@
switch(MINOR(inode->i_rdev))
{
case WATCHDOG_MINOR:
- if(wdt_is_open)
+ if(test_and_set_bit(0, &wdt_is_open))
return -EBUSY;
/*
* Activate
*/

- wdt_is_open=1;
inb_p(WDT_DC); /* Disable */
wdt_ctr_mode(0,3);
wdt_ctr_mode(1,2);
@@ -380,7 +379,7 @@
inb_p(WDT_DC); /* Disable counters */
wdt_ctr_load(2,0); /* 0 length reset pulses now */
#endif
- wdt_is_open=0;
+ clear_bit(0, &wdt_is_open);
}
return 0;
}
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.1p3/drivers/char/wdt_pci.c linux.ac/drivers/char/wdt_pci.c
--- linux.1p3/drivers/char/wdt_pci.c Thu Nov 29 01:18:32 2001
+++ linux.ac/drivers/char/wdt_pci.c Thu Nov 29 01:23:17 2001
@@ -71,7 +71,7 @@
#define PCI_DEVICE_ID_WDG_CSM 0x22c0
#endif

-static int wdt_is_open;
+static unsigned long wdt_is_open;

/*
* You must set these - there is no sane way to probe for this board.
-
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