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    SubjectRe: 2.6.23-rc1-mm1: chipsfb_pci_suspend problem
    On Wed, 25 Jul 2007 15:48:10 +0200
    "Rafael J. Wysocki" <rjw@sisk.pl> wrote:

    > On Wednesday, 25 July 2007 14:55, Cedric Le Goater wrote:
    > > Andrew Morton wrote:
    > > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-rc1/2.6.23-rc1-mm1/
    > >
    > > from pm-move-definition-of-struct-pm_ops-to-suspendh.patch :
    > >
    > > drivers/video/chipsfb.c: In function 'chipsfb_pci_suspend':
    > > drivers/video/chipsfb.c:461: error: 'PM_SUSPEND_MEM' undeclared (first use in this function)
    > > drivers/video/chipsfb.c:461: error: (Each undeclared identifier is reported only once
    > > drivers/video/chipsfb.c:461: error: for each function it appears in.)
    >
    > Well, actually, this is a bug in chipsfb.c, as it shouldn't use PM_SUSPEND_MEM
    > in there, but PMSG_SUSPEND (patch untested).
    >
    > Greetings,
    > Rafael
    >
    >
    > ---
    > drivers/video/chipsfb.c | 2 +-
    > 1 file changed, 1 insertion(+), 1 deletion(-)
    >
    > Index: linux-2.6.23-rc1/drivers/video/chipsfb.c
    > ===================================================================
    > --- linux-2.6.23-rc1.orig/drivers/video/chipsfb.c
    > +++ linux-2.6.23-rc1/drivers/video/chipsfb.c
    > @@ -458,7 +458,7 @@ static int chipsfb_pci_suspend(struct pc
    >
    > if (state.event == pdev->dev.power.power_state.event)
    > return 0;
    > - if (state.event != PM_SUSPEND_MEM)
    > + if (state != PMSG_SUSPEND)
    > goto done;
    >
    > acquire_console_sem();

    For reasons which aren't immediately obvious, the compiler didn't like
    that: comparing with an immediate struct liek that is a bit tricky.

    This is equivalent, and works:


    --- a/drivers/video/chipsfb.c~chipsfb-use-correct-pm-state
    +++ a/drivers/video/chipsfb.c
    @@ -24,6 +24,7 @@
    #include <linux/delay.h>
    #include <linux/interrupt.h>
    #include <linux/fb.h>
    +#include <linux/pm.h>
    #include <linux/init.h>
    #include <linux/pci.h>
    #include <linux/console.h>
    @@ -458,7 +459,7 @@ static int chipsfb_pci_suspend(struct pc

    if (state.event == pdev->dev.power.power_state.event)
    return 0;
    - if (state.event != PM_SUSPEND_MEM)
    + if (state.event != PM_EVENT_SUSPEND)
    goto done;

    acquire_console_sem();
    _
    Is this a 2.6.23 thing?
    -
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