diff options
Diffstat (limited to 'drivers/fsi')
| -rw-r--r-- | drivers/fsi/fsi-master-gpio.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/fsi/fsi-master-gpio.c b/drivers/fsi/fsi-master-gpio.c index ae2618768508..a6d602e89c11 100644 --- a/drivers/fsi/fsi-master-gpio.c +++ b/drivers/fsi/fsi-master-gpio.c @@ -461,12 +461,14 @@ static int fsi_master_gpio_term(struct fsi_master *_master, static int fsi_master_gpio_break(struct fsi_master *_master, int link) { struct fsi_master_gpio *master = to_fsi_master_gpio(_master); + unsigned long flags; if (link != 0) return -ENODEV; trace_fsi_master_gpio_break(master); + spin_lock_irqsave(&master->cmd_lock, flags); set_sda_output(master, 1); sda_out(master, 1); clock_toggle(master, FSI_PRE_BREAK_CLOCKS); @@ -475,6 +477,7 @@ static int fsi_master_gpio_break(struct fsi_master *_master, int link) echo_delay(master); sda_out(master, 1); clock_toggle(master, FSI_POST_BREAK_CLOCKS); + spin_unlock_irqrestore(&master->cmd_lock, flags); /* Wait for logic reset to take effect */ udelay(200); @@ -497,10 +500,14 @@ static void fsi_master_gpio_init(struct fsi_master_gpio *master) static int fsi_master_gpio_link_enable(struct fsi_master *_master, int link) { struct fsi_master_gpio *master = to_fsi_master_gpio(_master); + unsigned long flags; if (link != 0) return -ENODEV; + + spin_lock_irqsave(&master->cmd_lock, flags); gpiod_set_value(master->gpio_enable, 1); + spin_unlock_irqrestore(&master->cmd_lock, flags); return 0; } |