adulau/aha
1
0
Fork 0
mirror of https://github.com/adulau/aha.git synced 2024-12-28 11:46:19 +00:00
Code Issues Projects Releases Packages Wiki Activity

Blackfin arch: be less noisy when gets a gpio conflict after kernel has booted

Browse source 
Once the kernel has booted - be less noisy when someone does a modprobe
(and gets a gpio conflict).

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Robin Getz 2009-03-29 01:10:30 +08:00 committed by Bryan Wu
parent abd750a0fa
commit d6879c585b
1 changed files with 16 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
arch/blackfin/kernel/bfin_gpio.c
View file

@ -802,7 +802,8 @@ int peripheral_request(unsigned short per, const char *label)
*/
if (unlikely(!check_gpio(ident) &&
reserved_gpio_map[gpio_bank(ident)] & gpio_bit(ident))) {
dump_stack();
if (system_state == SYSTEM_BOOTING)
dump_stack();
printk(KERN_ERR
"%s: Peripheral %d is already reserved as GPIO by %s !\n",
__func__, ident, get_label(ident));
@ -830,7 +831,8 @@ int peripheral_request(unsigned short per, const char *label)
if (cmp_label(ident, label) == 0)
goto anyway;
dump_stack();
if (system_state == SYSTEM_BOOTING)
dump_stack();
printk(KERN_ERR
"%s: Peripheral %d function %d is already reserved by %s !\n",
__func__, ident, P_FUNCT2MUX(per), get_label(ident));
@ -946,14 +948,16 @@ int bfin_gpio_request(unsigned gpio, const char *label)
}
if (unlikely(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
dump_stack();
if (system_state == SYSTEM_BOOTING)
dump_stack();
printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved by %s !\n",
gpio, get_label(gpio));
local_irq_restore_hw(flags);
return -EBUSY;
}
if (unlikely(reserved_peri_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
dump_stack();
if (system_state == SYSTEM_BOOTING)
dump_stack();
printk(KERN_ERR
"bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
gpio, get_label(gpio));
@ -993,7 +997,8 @@ void bfin_gpio_free(unsigned gpio)
local_irq_save_hw(flags);
if (unlikely(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {
dump_stack();
if (system_state == SYSTEM_BOOTING)
dump_stack();
gpio_error(gpio);
local_irq_restore_hw(flags);
return;
@ -1017,7 +1022,8 @@ int bfin_gpio_irq_request(unsigned gpio, const char *label)
local_irq_save_hw(flags);
if (unlikely(reserved_gpio_irq_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
dump_stack();
if (system_state == SYSTEM_BOOTING)
dump_stack();
printk(KERN_ERR
"bfin-gpio: GPIO %d is already reserved as gpio-irq !\n",
gpio);
@ -1025,7 +1031,8 @@ int bfin_gpio_irq_request(unsigned gpio, const char *label)
return -EBUSY;
}
if (unlikely(reserved_peri_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
dump_stack();
if (system_state == SYSTEM_BOOTING)
dump_stack();
printk(KERN_ERR
"bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
gpio, get_label(gpio));
@ -1057,7 +1064,8 @@ void bfin_gpio_irq_free(unsigned gpio)
local_irq_save_hw(flags);
if (unlikely(!(reserved_gpio_irq_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {
dump_stack();
if (system_state == SYSTEM_BOOTING)
dump_stack();
gpio_error(gpio);
local_irq_restore_hw(flags);
return;