[PATCH] uml pt_regs fixes
Real fix for UML pt_regs stuff. Note set_irq_regs() logics in there...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index cfd9f01..426633e 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -20,7 +20,7 @@
#define LINE_BUFSIZE 4096
-static irqreturn_t line_interrupt(int irq, void *data, struct pt_regs *unused)
+static irqreturn_t line_interrupt(int irq, void *data)
{
struct chan *chan = data;
struct line *line = chan->line;
@@ -364,8 +364,7 @@
reactivate_chan(&line->chan_list, line->driver->read_irq);
}
-static irqreturn_t line_write_interrupt(int irq, void *data,
- struct pt_regs *unused)
+static irqreturn_t line_write_interrupt(int irq, void *data)
{
struct chan *chan = data;
struct line *line = chan->line;
@@ -712,7 +711,7 @@
struct tty_struct *tty;
};
-static irqreturn_t winch_interrupt(int irq, void *data, struct pt_regs *unused)
+static irqreturn_t winch_interrupt(int irq, void *data)
{
struct winch *winch = data;
struct tty_struct *tty;
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index a67dcbd..d08bd03 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -74,8 +74,7 @@
static DECLARE_WORK(mconsole_work, mc_work_proc, NULL);
-static irqreturn_t mconsole_interrupt(int irq, void *dev_id,
- struct pt_regs *regs)
+static irqreturn_t mconsole_interrupt(int irq, void *dev_id)
{
/* long to avoid size mismatch warnings from gcc */
long fd;
@@ -674,8 +673,9 @@
static void sysrq_proc(void *arg)
{
char *op = arg;
-
- handle_sysrq(*op, ¤t->thread.regs, NULL);
+ struct pt_regs *old_regs = set_irq_regs(¤t->thread.regs);
+ handle_sysrq(*op, NULL);
+ set_irq_regs(old_regs);
}
void mconsole_sysrq(struct mc_request *req)
diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index c1c5604..ec9eb8b 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -77,7 +77,7 @@
dev_close( (struct net_device *) dev);
}
-irqreturn_t uml_net_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t uml_net_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct uml_net_private *lp = dev->priv;
diff --git a/arch/um/drivers/port_kern.c b/arch/um/drivers/port_kern.c
index 73755f3..ce9f373 100644
--- a/arch/um/drivers/port_kern.c
+++ b/arch/um/drivers/port_kern.c
@@ -47,7 +47,7 @@
struct port_list *port;
};
-static irqreturn_t pipe_interrupt(int irq, void *data, struct pt_regs *regs)
+static irqreturn_t pipe_interrupt(int irq, void *data)
{
struct connection *conn = data;
int fd;
@@ -152,7 +152,7 @@
DECLARE_WORK(port_work, port_work_proc, NULL);
-static irqreturn_t port_interrupt(int irq, void *data, struct pt_regs *regs)
+static irqreturn_t port_interrupt(int irq, void *data)
{
struct port_list *port = data;
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index f0b0668..bc458f5 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -524,7 +524,7 @@
do_ubd_request(ubd_queue);
}
-static irqreturn_t ubd_intr(int irq, void *dev, struct pt_regs *unused)
+static irqreturn_t ubd_intr(int irq, void *dev)
{
ubd_handler();
return(IRQ_HANDLED);
diff --git a/arch/um/drivers/xterm_kern.c b/arch/um/drivers/xterm_kern.c
index 6036ec8..a4ce705 100644
--- a/arch/um/drivers/xterm_kern.c
+++ b/arch/um/drivers/xterm_kern.c
@@ -21,7 +21,7 @@
int new_fd;
};
-static irqreturn_t xterm_interrupt(int irq, void *data, struct pt_regs *regs)
+static irqreturn_t xterm_interrupt(int irq, void *data)
{
struct xterm_wait *xterm = data;
int fd;
diff --git a/arch/um/include/irq_kern.h b/arch/um/include/irq_kern.h
index c222d56..81beb18 100644
--- a/arch/um/include/irq_kern.h
+++ b/arch/um/include/irq_kern.h
@@ -10,12 +10,11 @@
#include "asm/ptrace.h"
extern int um_request_irq(unsigned int irq, int fd, int type,
- irqreturn_t (*handler)(int, void *,
- struct pt_regs *),
+ irqreturn_t (*handler)(int, void *),
unsigned long irqflags, const char * devname,
void *dev_id);
extern int init_aio_irq(int irq, char *name,
- irqreturn_t (*handler)(int, void *, struct pt_regs *));
+ irqreturn_t (*handler)(int, void *));
#endif
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 7c41dabe..3c01c2b 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -355,14 +355,16 @@
*/
unsigned int do_IRQ(int irq, union uml_pt_regs *regs)
{
- irq_enter();
- __do_IRQ(irq);
- irq_exit();
- return 1;
+ struct pt_regs *old_regs = set_irq_regs((struct pt_regs *)regs);
+ irq_enter();
+ __do_IRQ(irq);
+ irq_exit();
+ set_irq_regs(old_regs);
+ return 1;
}
int um_request_irq(unsigned int irq, int fd, int type,
- irqreturn_t (*handler)(int, void *, struct pt_regs *),
+ irqreturn_t (*handler)(int, void *),
unsigned long irqflags, const char * devname,
void *dev_id)
{
@@ -423,8 +425,7 @@
}
}
-int init_aio_irq(int irq, char *name, irqreturn_t (*handler)(int, void *,
- struct pt_regs *))
+int init_aio_irq(int irq, char *name, irqreturn_t (*handler)(int, void *))
{
int fds[2], err;
diff --git a/arch/um/kernel/sigio.c b/arch/um/kernel/sigio.c
index 0ad755c..2b0ab43 100644
--- a/arch/um/kernel/sigio.c
+++ b/arch/um/kernel/sigio.c
@@ -17,7 +17,7 @@
/* Protected by sigio_lock() called from write_sigio_workaround */
static int sigio_irq_fd = -1;
-static irqreturn_t sigio_interrupt(int irq, void *data, struct pt_regs *unused)
+static irqreturn_t sigio_interrupt(int irq, void *data)
{
char c;
diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c
index a92965f..2e354b3 100644
--- a/arch/um/kernel/time.c
+++ b/arch/um/kernel/time.c
@@ -86,7 +86,7 @@
return nsecs;
}
-irqreturn_t um_timer(int irq, void *dev, struct pt_regs *regs)
+irqreturn_t um_timer(int irq, void *dev)
{
unsigned long long nsecs;
unsigned long flags;