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[PATCH] shpchp: fix improper reference to Slot Avail Regsister

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The hpc_get_max_bus_speed() function of the SHPCHP driver seems to
refer wrong bits in the "Slot Avail Register I" and "Slot Avail
Register II". This patch fixes this bug. And this also cleanup the
code.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Kenji Kaneshige 2005-11-24 13:44:01 +09:00 committed by Greg Kroah-Hartman
parent e00e57efa3
commit 6558b6ab14
1 changed files with 16 additions and 17 deletions
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33
drivers/pci/hotplug/shpchp_hpc.c
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@ -1121,7 +1121,6 @@ static int hpc_get_max_bus_speed (struct slot *slot, enum pci_bus_speed *value)
int retval = 0;
u8 pi;
u32 slot_avail1, slot_avail2;
int slot_num;
DBG_ENTER_ROUTINE
@ -1140,39 +1139,39 @@ static int hpc_get_max_bus_speed (struct slot *slot, enum pci_bus_speed *value)
slot_avail2 = readl(php_ctlr->creg + SLOT_AVAIL2);
if (pi == 2) {
if ((slot_num = ((slot_avail2 & SLOT_133MHZ_PCIX_533) >> 27) ) != 0 )
if (slot_avail2 & SLOT_133MHZ_PCIX_533)
bus_speed = PCIX_133MHZ_533;
else if ((slot_num = ((slot_avail2 & SLOT_100MHZ_PCIX_533) >> 23) ) != 0 )
else if (slot_avail2 & SLOT_100MHZ_PCIX_533)
bus_speed = PCIX_100MHZ_533;
else if ((slot_num = ((slot_avail2 & SLOT_66MHZ_PCIX_533) >> 19) ) != 0 )
else if (slot_avail2 & SLOT_66MHZ_PCIX_533)
bus_speed = PCIX_66MHZ_533;
else if ((slot_num = ((slot_avail2 & SLOT_133MHZ_PCIX_266) >> 15) ) != 0 )
else if (slot_avail2 & SLOT_133MHZ_PCIX_266)
bus_speed = PCIX_133MHZ_266;
else if ((slot_num = ((slot_avail2 & SLOT_100MHZ_PCIX_266) >> 11) ) != 0 )
else if (slot_avail2 & SLOT_100MHZ_PCIX_266)
bus_speed = PCIX_100MHZ_266;
else if ((slot_num = ((slot_avail2 & SLOT_66MHZ_PCIX_266) >> 7) ) != 0 )
else if (slot_avail2 & SLOT_66MHZ_PCIX_266)
bus_speed = PCIX_66MHZ_266;
else if ((slot_num = ((slot_avail1 & SLOT_133MHZ_PCIX) >> 23) ) != 0 )
else if (slot_avail1 & SLOT_133MHZ_PCIX)
bus_speed = PCIX_133MHZ;
else if ((slot_num = ((slot_avail1 & SLOT_100MHZ_PCIX) >> 15) ) != 0 )
else if (slot_avail1 & SLOT_100MHZ_PCIX)
bus_speed = PCIX_100MHZ;
else if ((slot_num = ((slot_avail1 & SLOT_66MHZ_PCIX) >> 7) ) != 0 )
else if (slot_avail1 & SLOT_66MHZ_PCIX)
bus_speed = PCIX_66MHZ;
else if ((slot_num = (slot_avail2 & SLOT_66MHZ)) != 0 )
else if (slot_avail2 & SLOT_66MHZ)
bus_speed = PCI_66MHZ;
else if ((slot_num = (slot_avail1 & SLOT_33MHZ)) != 0 )
else if (slot_avail1 & SLOT_33MHZ)
bus_speed = PCI_33MHZ;
else bus_speed = PCI_SPEED_UNKNOWN;
} else {
if ((slot_num = ((slot_avail1 & SLOT_133MHZ_PCIX) >> 23) ) != 0 )
if (slot_avail1 & SLOT_133MHZ_PCIX)
bus_speed = PCIX_133MHZ;
else if ((slot_num = ((slot_avail1 & SLOT_100MHZ_PCIX) >> 15) ) != 0 )
else if (slot_avail1 & SLOT_100MHZ_PCIX)
bus_speed = PCIX_100MHZ;
else if ((slot_num = ((slot_avail1 & SLOT_66MHZ_PCIX) >> 7) ) != 0 )
else if (slot_avail1 & SLOT_66MHZ_PCIX)
bus_speed = PCIX_66MHZ;
else if ((slot_num = (slot_avail2 & SLOT_66MHZ)) != 0 )
else if (slot_avail2 & SLOT_66MHZ)
bus_speed = PCI_66MHZ;
else if ((slot_num = (slot_avail1 & SLOT_33MHZ)) != 0 )
else if (slot_avail1 & SLOT_33MHZ)
bus_speed = PCI_33MHZ;
else bus_speed = PCI_SPEED_UNKNOWN;
}