As pointed out by David Brownell, we know that IRQs are never
blocked when calling gs_close function. So the save/restore
IRQ flags are pointless.
Signed-off-by: Franck Bui-Huu <[EMAIL PROTECTED]>
---
drivers/usb/gadget/serial.c | 18 ++++++++----------
1 files changed, 8 insertions(+), 10 deletions(-)
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index 64a7d4f..e4c47b4 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -53,8 +53,8 @@ #include "gadget_chips.h"
/* Defines */
-#define GS_VERSION_STR "v2.1"
-#define GS_VERSION_NUM 0x0201
+#define GS_VERSION_STR "v2.2"
+#define GS_VERSION_NUM 0x0202
#define GS_LONG_NAME "Gadget Serial"
#define GS_SHORT_NAME "g_serial"
@@ -774,18 +774,16 @@ exit_unlock_dev:
#define GS_WRITE_FINISHED_EVENT_SAFELY(p) \
({ \
- unsigned long flags; \
int cond; \
\
- spin_lock_irqsave(&(p)->port_lock, flags); \
+ spin_lock_irq(&(p)->port_lock); \
cond = !(p)->port_dev || !gs_buf_data_avail((p)->port_write_buf); \
- spin_unlock_irqrestore(&(p)->port_lock, flags); \
+ spin_unlock_irq(&(p)->port_lock); \
cond; \
})
static void gs_close(struct tty_struct *tty, struct file *file)
{
- unsigned long flags;
struct gs_port *port = tty->driver_data;
struct semaphore *sem;
@@ -799,7 +797,7 @@ static void gs_close(struct tty_struct *
sem = &gs_open_close_sem[port->port_num];
down(sem);
- spin_lock_irqsave(&port->port_lock, flags);
+ spin_lock_irq(&port->port_lock);
if (port->port_open_count == 0) {
printk(KERN_ERR
@@ -827,11 +825,11 @@ static void gs_close(struct tty_struct *
/* wait for write buffer to drain, or */
/* at most GS_CLOSE_TIMEOUT seconds */
if (gs_buf_data_avail(port->port_write_buf) > 0) {
- spin_unlock_irqrestore(&port->port_lock, flags);
+ spin_unlock_irq(&port->port_lock);
wait_event_interruptible_timeout(port->port_write_wait,
GS_WRITE_FINISHED_EVENT_SAFELY(port),
GS_CLOSE_TIMEOUT * HZ);
- spin_lock_irqsave(&port->port_lock, flags);
+ spin_lock_irq(&port->port_lock);
}
/* free disconnected port on final close */
@@ -851,7 +849,7 @@ static void gs_close(struct tty_struct *
port->port_num, tty, file);
exit:
- spin_unlock_irqrestore(&port->port_lock, flags);
+ spin_unlock_irq(&port->port_lock);
up(sem);
}
--
1.4.0.rc2
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