diff options
| author | Auke Kok <auke-jan.h.kok@intel.com> | 2007-06-08 15:46:36 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-11 16:02:10 -0700 |
| commit | 44c10138fd4bbc4b6d6bff0873c24902f2a9da65 (patch) | |
| tree | 6e16d3ec80c87490dc743f72da086356f2906ace /arch/i386/kernel/cpu/cpufreq/gx-suspmod.c | |
| parent | b8a3a5214d7cc115f1ca3a3967b7229d97c46f4a (diff) | |
PCI: Change all drivers to use pci_device->revision
Instead of all drivers reading pci config space to get the revision
ID, they can now use the pci_device->revision member.
This exposes some issues where drivers where reading a word or a dword
for the revision number, and adding useless error-handling around the
read. Some drivers even just read it for no purpose of all.
In devices where the revision ID is being copied over and used in what
appears to be the equivalent of hotpath, I have left the copy code
and the cached copy as not to influence the driver's performance.
Compile tested with make all{yes,mod}config on x86_64 and i386.
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Acked-by: Dave Jones <davej@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/i386/kernel/cpu/cpufreq/gx-suspmod.c')
| -rw-r--r-- | arch/i386/kernel/cpu/cpufreq/gx-suspmod.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/i386/kernel/cpu/cpufreq/gx-suspmod.c b/arch/i386/kernel/cpu/cpufreq/gx-suspmod.c index 6667e9cceb9..194144539a6 100644 --- a/arch/i386/kernel/cpu/cpufreq/gx-suspmod.c +++ b/arch/i386/kernel/cpu/cpufreq/gx-suspmod.c @@ -115,7 +115,6 @@ struct gxfreq_params { u8 pci_suscfg; u8 pci_pmer1; u8 pci_pmer2; - u8 pci_rev; struct pci_dev *cs55x0; }; @@ -276,7 +275,7 @@ static void gx_set_cpuspeed(unsigned int khz) pci_write_config_byte(gx_params->cs55x0, PCI_VIDTC, 100);/* typical 50 to 100ms */ pci_write_config_byte(gx_params->cs55x0, PCI_PMER1, pmer1); - if (gx_params->pci_rev < 0x10) { /* CS5530(rev 1.2, 1.3) */ + if (gx_params->cs55x0->revision < 0x10) { /* CS5530(rev 1.2, 1.3) */ suscfg = gx_params->pci_suscfg | SUSMOD; } else { /* CS5530A,B.. */ suscfg = gx_params->pci_suscfg | SUSMOD | PWRSVE; @@ -471,7 +470,6 @@ static int __init cpufreq_gx_init(void) pci_read_config_byte(params->cs55x0, PCI_PMER2, &(params->pci_pmer2)); pci_read_config_byte(params->cs55x0, PCI_MODON, &(params->on_duration)); pci_read_config_byte(params->cs55x0, PCI_MODOFF, &(params->off_duration)); - pci_read_config_byte(params->cs55x0, PCI_REVISION_ID, ¶ms->pci_rev); if ((ret = cpufreq_register_driver(&gx_suspmod_driver))) { kfree(params); |