um: irq: Remove IRQF_DISABLED

Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).

So now this flag is a NOOP and can be removed.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

7 files changed, 11 insertions, 11 deletions

diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index c1cf2206b84b..ac9bcfbbeee1 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -347,8 +347,8 @@ static irqreturn_t line_write_interrupt(int irq, void *data)
 	int err;
 
 	/*
-	 * Interrupts are disabled here because we registered the interrupt with
-	 * IRQF_DISABLED (see line_setup_irq).
+	 * Interrupts are disabled here because genirq keep irqs disabled when
+	 * calling the action handler.
 	 */
 
 	spin_lock(&line->lock);
@@ -371,7 +371,7 @@ static irqreturn_t line_write_interrupt(int irq, void *data)
 int line_setup_irq(int fd, int input, int output, struct line *line, void *data)
 {
 	const struct line_driver *driver = line->driver;
-	int err = 0, flags = IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM;
+	int err = 0, flags = IRQF_SHARED | IRQF_SAMPLE_RANDOM;
 
 	if (input)
 		err = um_request_irq(driver->read_irq, fd, IRQ_READ,
@@ -807,7 +807,7 @@ void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty,
 				   .stack	= stack });
 
 	if (um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt,
-			   IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
+			   IRQF_SHARED | IRQF_SAMPLE_RANDOM,
 			   "winch", winch) < 0) {
 		printk(KERN_ERR "register_winch_irq - failed to register "
 		       "IRQ\n");
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index c70e047eed72..e672bd6d43e3 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -773,7 +773,7 @@ static int __init mconsole_init(void)
 	register_reboot_notifier(&reboot_notifier);
 
 	err = um_request_irq(MCONSOLE_IRQ, sock, IRQ_READ, mconsole_interrupt,
-			     IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
+			     IRQF_SHARED | IRQF_SAMPLE_RANDOM,
 			     "mconsole", (void *)sock);
 	if (err) {
 		printk(KERN_ERR "Failed to get IRQ for management console\n");
diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index a492e59883a3..46ffd659be82 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -161,7 +161,7 @@ static int uml_net_open(struct net_device *dev)
 	}
 
 	err = um_request_irq(dev->irq, lp->fd, IRQ_READ, uml_net_interrupt,
-			     IRQF_DISABLED | IRQF_SHARED, dev->name, dev);
+			     IRQF_SHARED, dev->name, dev);
 	if (err != 0) {
 		printk(KERN_ERR "uml_net_open: failed to get irq(%d)\n", err);
 		err = -ENETUNREACH;
diff --git a/arch/um/drivers/port_kern.c b/arch/um/drivers/port_kern.c
index a11573be0961..e31680e662a4 100644
--- a/arch/um/drivers/port_kern.c
+++ b/arch/um/drivers/port_kern.c
@@ -100,7 +100,7 @@ static int port_accept(struct port_list *port)
 		  .port 	= port });
 
 	if (um_request_irq(TELNETD_IRQ, socket[0], IRQ_READ, pipe_interrupt,
-			  IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
+			  IRQF_SHARED | IRQF_SAMPLE_RANDOM,
 			  "telnetd", conn)) {
 		printk(KERN_ERR "port_accept : failed to get IRQ for "
 		       "telnetd\n");
@@ -184,7 +184,7 @@ void *port_data(int port_num)
 	}
 
 	if (um_request_irq(ACCEPT_IRQ, fd, IRQ_READ, port_interrupt,
-			  IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
+			  IRQF_SHARED | IRQF_SAMPLE_RANDOM,
 			  "port", port)) {
 		printk(KERN_ERR "Failed to get IRQ for port %d\n", port_num);
 		goto out_close;
diff --git a/arch/um/drivers/random.c b/arch/um/drivers/random.c
index 981085a93f30..b25296e6218a 100644
--- a/arch/um/drivers/random.c
+++ b/arch/um/drivers/random.c
@@ -131,7 +131,7 @@ static int __init rng_init (void)
 	random_fd = err;
 
 	err = um_request_irq(RANDOM_IRQ, random_fd, IRQ_READ, random_interrupt,
-			     IRQF_DISABLED | IRQF_SAMPLE_RANDOM, "random",
+			     IRQF_SAMPLE_RANDOM, "random",
 			     NULL);
 	if (err)
 		goto err_out_cleanup_hw;
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 944453a3ec99..c884ebd07f86 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -1115,7 +1115,7 @@ static int __init ubd_driver_init(void){
 		return 0;
 	}
 	err = um_request_irq(UBD_IRQ, thread_fd, IRQ_READ, ubd_intr,
-			     IRQF_DISABLED, "ubd", ubd_devs);
+			     0, "ubd", ubd_devs);
 	if(err != 0)
 		printk(KERN_ERR "um_request_irq failed - errno = %d\n", -err);
 	return 0;
diff --git a/arch/um/drivers/xterm_kern.c b/arch/um/drivers/xterm_kern.c
index b646bccef37a..8bd130f0bda3 100644
--- a/arch/um/drivers/xterm_kern.c
+++ b/arch/um/drivers/xterm_kern.c
@@ -50,7 +50,7 @@ int xterm_fd(int socket, int *pid_out)
 	init_completion(&data->ready);
 
 	err = um_request_irq(XTERM_IRQ, socket, IRQ_READ, xterm_interrupt,
-			     IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
+			     IRQF_SHARED | IRQF_SAMPLE_RANDOM,
 			     "xterm", data);
 	if (err) {
 		printk(KERN_ERR "xterm_fd : failed to get IRQ for xterm, "