On 08/03/05 05:24 -0800, Ganesh Venkatesan wrote:
> No. This would not work. You cannot replace msec_delay with msleep.
> You probably could replace the set_current_task/schedule_timeout with
> msleep. msleep does not check for the correct context, and if one were
> to call msec_delay from interrupt context, the kernel would panic.
And that would be wrong? Guess what BUG() does.
>
> ganesh.
>
>
> On Sun, 06 Mar 2005 11:32:48 +0100, domen@xxxxxxxxxxxx
> <domen@xxxxxxxxxxxx> wrote:
> >
> >
> > Use msleep() instead of schedule_timeout()
> > to guarantee the task delays as expected. I was told earlier that the
> > in_interrupt() check is not necessary. It would be nice to get some
> > verification of this (i.e. the driver functions the same without it).
> >
> > Signed-off-by: Nishanth Aravamudan <nacc@xxxxxxxxxx>
> > Signed-off-by: Maximilian Attems <janitor@xxxxxxxxxxxxxx>
> > Signed-off-by: Domen Puncer <domen@xxxxxxxxxxxx>
> > ---
> >
> > kj-domen/drivers/net/ixgb/ixgb_osdep.h | 8 +-------
> > 1 files changed, 1 insertion(+), 7 deletions(-)
> >
> > diff -puN drivers/net/ixgb/ixgb_osdep.h~msleep-drivers_net_ixgb_ixgb_osdep
> > drivers/net/ixgb/ixgb_osdep.h
> > --- kj/drivers/net/ixgb/ixgb_osdep.h~msleep-drivers_net_ixgb_ixgb_osdep
> > 2005-03-05 16:09:27.000000000 +0100
> > +++ kj-domen/drivers/net/ixgb/ixgb_osdep.h 2005-03-05
> > 16:09:27.000000000 +0100
> > @@ -41,13 +41,7 @@
> > #include <linux/sched.h>
> >
> > #ifndef msec_delay
> > -#define msec_delay(x) do { if(in_interrupt()) { \
> > - /* Don't mdelay in interrupt context! */ \
> > - BUG(); \
> > - } else { \
> > - set_current_state(TASK_UNINTERRUPTIBLE); \
> > - schedule_timeout((x * HZ)/1000 + 2); \
> > - } } while(0)
> > +#define msec_delay(x) msleep(x)
> > #endif
> >
> > #define PCI_COMMAND_REGISTER PCI_COMMAND
> > _
> >
> >
|