Re: [PARISC] fix uninitialized spinlock in HIL keyboard driver
Helge Deller <[email protected]>
| Newsgroups | gmane.linux.ports.hppa |
|---|---|
| Message-ID | <[email protected]> |
On Sunday 18 February 2007, Helge Deller wrote:
> On Sunday 18 February 2007, Dmitry Torokhov wrote:
> > If you could redo the patches against my tree that would be nice - I am having
> > trouble applying "[PARISC] hp_sdc: fix request_irq()/free_irq() parameters"
> >
> > Btw, is there any chance we coudl fix the code style in hil drivers. They are
> > very different from the rest of the kernel. Something like patch below...
> Sure, I'll do both and send you seperate patches soon.
Hi Dmitry,
Here is the patch and patchtext for the bugfixes which should cleanly apply to your git tree.
The coding-style cleanups will follow soon as well.
----------
Input: HIL - various fixes for HIL drivers
- mark some structures const or __read_mostly
- hilkbd.c: fix uninitialized spinlock in HIL keyboard driver
- hil_mlc.c: use USEC_PER_SEC instead of 1000000
- hp_sdc: bugfix for request_irq()/free_irq() parameters, this prevented
multiple load/unload cycles as module
Signed-off-by: Helge Deller <[email protected]>
----------
diff --git a/drivers/input/keyboard/hil_kbd.c b/drivers/input/keyboard/hil_kbd.c
index 7cc9728..779322e 100644
--- a/drivers/input/keyboard/hil_kbd.c
+++ b/drivers/input/keyboard/hil_kbd.c
@@ -51,7 +51,7 @@ MODULE_LICENSE("Dual BSD/GPL");
#define HIL_KBD_SET1_UPBIT 0x01
#define HIL_KBD_SET1_SHIFT 1
-static unsigned int hil_kbd_set1[HIL_KEYCODES_SET1_TBLSIZE] =
+static unsigned int hil_kbd_set1[HIL_KEYCODES_SET1_TBLSIZE] __read_mostly =
{ HIL_KEYCODES_SET1 };
#define HIL_KBD_SET2_UPBIT 0x01
@@ -60,10 +60,10 @@ static unsigned int hil_kbd_set1[HIL_KEY
#define HIL_KBD_SET3_UPBIT 0x80
#define HIL_KBD_SET3_SHIFT 0
-static unsigned int hil_kbd_set3[HIL_KEYCODES_SET3_TBLSIZE] =
+static unsigned int hil_kbd_set3[HIL_KEYCODES_SET3_TBLSIZE] __read_mostly =
{ HIL_KEYCODES_SET3 };
-static char hil_language[][16] = { HIL_LOCALE_MAP };
+static const char hil_language[][16] = { HIL_LOCALE_MAP };
struct hil_kbd {
struct input_dev *dev;
@@ -368,7 +368,7 @@ static struct serio_device_id hil_kbd_id
{ 0 }
};
-struct serio_driver hil_kbd_serio_drv = {
+static struct serio_driver hil_kbd_serio_drv = {
.driver = {
.name = "hil_kbd",
},
diff --git a/drivers/input/keyboard/hilkbd.c b/drivers/input/keyboard/hilkbd.c
index 4de4dc2..230f5db 100644
--- a/drivers/input/keyboard/hilkbd.c
+++ b/drivers/input/keyboard/hilkbd.c
@@ -3,7 +3,7 @@
*
* Copyright (C) 1998 Philip Blundell <[email protected]>
* Copyright (C) 1999 Matthew Wilcox <[email protected]>
- * Copyright (C) 1999-2006 Helge Deller <[email protected]>
+ * Copyright (C) 1999-2007 Helge Deller <[email protected]>
*
* Very basic HP Human Interface Loop (HIL) driver.
* This driver handles the keyboard on HP300 (m68k) and on some
@@ -89,7 +89,7 @@ MODULE_LICENSE("GPL v2");
#define HIL_READKBDSADR 0xF9
#define HIL_WRITEKBDSADR 0xE9
-static unsigned int hphilkeyb_keycode[HIL_KEYCODES_SET1_TBLSIZE] =
+static unsigned int hphilkeyb_keycode[HIL_KEYCODES_SET1_TBLSIZE] __read_mostly =
{ HIL_KEYCODES_SET1 };
/* HIL structure */
@@ -211,6 +211,7 @@ hil_keyb_init(void)
return -ENODEV; /* already initialized */
}
+ spin_lock_init(&hil_dev.lock);
hil_dev.dev = input_allocate_device();
if (!hil_dev.dev)
return -ENOMEM;
diff --git a/drivers/input/serio/hil_mlc.c b/drivers/input/serio/hil_mlc.c
index 4fa93ff..0710704 100644
--- a/drivers/input/serio/hil_mlc.c
+++ b/drivers/input/serio/hil_mlc.c
@@ -408,7 +408,7 @@ static int hilse_operate(hil_mlc *mlc, i
#define OUT_LAST(pack) \
{ HILSE_OUT_LAST, { .packet = pack }, 0, 0, 0, 0 },
-struct hilse_node hil_mlc_se[HILSEN_END] = {
+const struct hilse_node hil_mlc_se[HILSEN_END] = {
/* 0 HILSEN_START */
FUNC(hilse_init_lcv, 0, HILSEN_NEXT, HILSEN_SLEEP, 0)
@@ -530,7 +530,7 @@ struct hilse_node hil_mlc_se[HILSEN_END]
/* 60 HILSEN_END */
};
-static inline void hilse_setup_input(hil_mlc *mlc, struct hilse_node *node) {
+static inline void hilse_setup_input(hil_mlc *mlc, const struct hilse_node *node) {
switch (node->act) {
case HILSE_EXPECT_DISC:
@@ -563,21 +563,19 @@ static inline void hilse_setup_input(hil
#ifdef HIL_MLC_DEBUG
static int doze = 0;
static int seidx; /* For debug */
-static int kick = 1;
#endif
static int hilse_donode (hil_mlc *mlc) {
- struct hilse_node *node;
+ const struct hilse_node *node;
int nextidx = 0;
int sched_long = 0;
unsigned long flags;
#ifdef HIL_MLC_DEBUG
if (mlc->seidx && (mlc->seidx != seidx) && mlc->seidx != 41 && mlc->seidx != 42 && mlc->seidx != 43) {
- printk(KERN_DEBUG PREFIX "z%i \n%s {%i}", doze, kick ? "K" : "", mlc->seidx);
+ printk(KERN_DEBUG PREFIX "z%i \n {%i}", doze, mlc->seidx);
doze = 0;
}
- kick = 0;
seidx = mlc->seidx;
#endif
@@ -588,7 +586,7 @@ static int hilse_donode (hil_mlc *mlc) {
hil_packet pack;
case HILSE_FUNC:
- if (node->object.func == NULL) break;
+ BUG_ON(node->object.func == NULL);
rc = node->object.func(mlc, node->arg);
nextidx = (rc > 0) ? node->ugly :
((rc < 0) ? node->bad : node->good);
@@ -674,10 +672,10 @@ static int hilse_donode (hil_mlc *mlc) {
if (!sched_long) goto sched;
do_gettimeofday(&tv);
- tv.tv_usec += 1000000 * (tv.tv_sec - mlc->instart.tv_sec);
+ tv.tv_usec += USEC_PER_SEC * (tv.tv_sec - mlc->instart.tv_sec);
tv.tv_usec -= mlc->instart.tv_usec;
if (tv.tv_usec >= mlc->intimeout) goto sched;
- tv.tv_usec = (mlc->intimeout - tv.tv_usec) * HZ / 1000000;
+ tv.tv_usec = (mlc->intimeout - tv.tv_usec) * HZ / USEC_PER_SEC;
if (!tv.tv_usec) goto sched;
mod_timer(&hil_mlcs_kicker, jiffies + tv.tv_usec);
break;
@@ -837,7 +835,7 @@ static void hil_mlc_serio_close(struct s
/* TODO wake up interruptable */
}
-static struct serio_device_id hil_mlc_serio_id = {
+static const struct serio_device_id hil_mlc_serio_id = {
.type = SERIO_HIL_MLC,
.proto = SERIO_HIL,
.extra = SERIO_ANY,
@@ -873,6 +871,8 @@ int hil_mlc_register(hil_mlc *mlc) {
hil_mlc_copy_di_scratch(mlc, i);
mlc_serio = kzalloc(sizeof(*mlc_serio), GFP_KERNEL);
mlc->serio[i] = mlc_serio;
+ snprintf(mlc_serio->name, sizeof(mlc_serio->name)-1, "HIL_SERIO%d", i);
+ snprintf(mlc_serio->phys, sizeof(mlc_serio->phys)-1, "HIL%d", i);
mlc_serio->id = hil_mlc_serio_id;
mlc_serio->write = hil_mlc_serio_write;
mlc_serio->open = hil_mlc_serio_open;
diff --git a/drivers/input/serio/hp_sdc.c b/drivers/input/serio/hp_sdc.c
index b57370d..353a8a1 100644
--- a/drivers/input/serio/hp_sdc.c
+++ b/drivers/input/serio/hp_sdc.c
@@ -748,7 +748,7 @@ void hp_sdc_kicker (unsigned long data)
#if defined(__hppa__)
-static struct parisc_device_id hp_sdc_tbl[] = {
+static const struct parisc_device_id hp_sdc_tbl[] = {
{
.hw_type = HPHW_FIO,
.hversion_rev = HVERSION_REV_ANY_ID,
@@ -817,12 +817,12 @@ static int __init hp_sdc_init(void)
#endif
errstr = "IRQ not available for";
- if(request_irq(hp_sdc.irq, &hp_sdc_isr, 0, "HP SDC",
- (void *) hp_sdc.base_io)) goto err1;
+ if (request_irq(hp_sdc.irq, &hp_sdc_isr, IRQF_SHARED|IRQF_SAMPLE_RANDOM,
+ "HP SDC", &hp_sdc)) goto err1;
errstr = "NMI not available for";
- if (request_irq(hp_sdc.nmi, &hp_sdc_nmisr, 0, "HP SDC NMI",
- (void *) hp_sdc.base_io)) goto err2;
+ if (request_irq(hp_sdc.nmi, &hp_sdc_nmisr, IRQF_SHARED,
+ "HP SDC NMI", &hp_sdc)) goto err2;
printk(KERN_INFO PREFIX "HP SDC at 0x%p, IRQ %d (NMI IRQ %d)\n",
(void *)hp_sdc.base_io, hp_sdc.irq, hp_sdc.nmi);
@@ -854,7 +854,7 @@ static int __init hp_sdc_init(void)
hp_sdc.dev_err = 0;
return 0;
err2:
- free_irq(hp_sdc.irq, NULL);
+ free_irq(hp_sdc.irq, &hp_sdc);
err1:
release_region(hp_sdc.data_io, 2);
err0:
@@ -898,8 +898,8 @@ static void hp_sdc_exit(void)
/* Wait until we know this has been processed by the i8042 */
hp_sdc_spin_ibf();
- free_irq(hp_sdc.nmi, NULL);
- free_irq(hp_sdc.irq, NULL);
+ free_irq(hp_sdc.nmi, &hp_sdc);
+ free_irq(hp_sdc.irq, &hp_sdc);
write_unlock_irq(&hp_sdc.lock);
del_timer(&hp_sdc.kicker);
diff --git a/drivers/input/serio/hp_sdc_mlc.c b/drivers/input/serio/hp_sdc_mlc.c
index aa4a8a4..1f131ff 100644
--- a/drivers/input/serio/hp_sdc_mlc.c
+++ b/drivers/input/serio/hp_sdc_mlc.c
@@ -323,11 +323,12 @@ static int __init hp_sdc_mlc_init(void)
mlc->in = &hp_sdc_mlc_in;
mlc->out = &hp_sdc_mlc_out;
+ mlc->priv = &hp_sdc_mlc_priv;
+
if (hil_mlc_register(mlc)) {
printk(KERN_WARNING PREFIX "Failed to register MLC structure with hil_mlc\n");
goto err0;
}
- mlc->priv = &hp_sdc_mlc_priv;
if (hp_sdc_request_hil_irq(&hp_sdc_mlc_isr)) {
printk(KERN_WARNING PREFIX "Request for raw HIL ISR hook denied\n");