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authorIvo van Doorn <ivdoorn@gmail.com>2007-11-12 15:02:22 +0100
committerJohn W. Linville <linville@tuxdriver.com>2007-11-14 21:21:15 -0500
commit755a957d407c3fcac58360d9309b1664078ac15d (patch)
tree8668e7d54a6af0b2a843abad255972a2dc84bc81 /drivers/net/wireless
parent14577f239fe5193d556ef1471c8667dabd556418 (diff)
rt2x00: Fix chipset revision validation
The validation of the chipset revision was broken since for rt2500usb and rt73usb different registers should be read. When rt2500usb was loaded for a rt73 device it would false think the chipset was correct because the wrong register was read and validated. This has been fixed by expanding the check to also see if the first 4 bits of the revision is not-0 (When reading the wrong register offset the returned value is usually 0 which can be interpreted as invalid) Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless')
-rw-r--r--drivers/net/wireless/rt2x00/rt2500pci.c4
-rw-r--r--drivers/net/wireless/rt2x00/rt2500usb.c4
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00.h8
-rw-r--r--drivers/net/wireless/rt2x00/rt73usb.c2
4 files changed, 10 insertions, 8 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c
index ff2d63267b1..702321c3016 100644
--- a/drivers/net/wireless/rt2x00/rt2500pci.c
+++ b/drivers/net/wireless/rt2x00/rt2500pci.c
@@ -620,7 +620,7 @@ static void rt2500pci_link_tuner(struct rt2x00_dev *rt2x00dev)
* up to version C the link tuning should halt after 20
* seconds.
*/
- if (rt2x00_get_rev(&rt2x00dev->chip) < RT2560_VERSION_D &&
+ if (rt2x00_rev(&rt2x00dev->chip) < RT2560_VERSION_D &&
rt2x00dev->link.count > 20)
return;
@@ -630,7 +630,7 @@ static void rt2500pci_link_tuner(struct rt2x00_dev *rt2x00dev)
* Chipset versions C and lower should directly continue
* to the dynamic CCA tuning.
*/
- if (rt2x00_get_rev(&rt2x00dev->chip) < RT2560_VERSION_D)
+ if (rt2x00_rev(&rt2x00dev->chip) < RT2560_VERSION_D)
goto dynamic_cca_tune;
/*
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index 7cdc80a122b..277a020b35e 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -753,7 +753,7 @@ static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
- if (rt2x00_get_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
+ if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
reg &= ~0x0002;
} else {
@@ -1257,7 +1257,7 @@ static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
- if (rt2x00_rev(&rt2x00dev->chip, 0xffff0)) {
+ if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
return -ENODEV;
}
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 9845e584b73..d1ad5251a77 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -751,14 +751,16 @@ static inline char rt2x00_rf(const struct rt2x00_chip *chipset, const u16 chip)
return (chipset->rf == chip);
}
-static inline u16 rt2x00_get_rev(const struct rt2x00_chip *chipset)
+static inline u16 rt2x00_rev(const struct rt2x00_chip *chipset)
{
return chipset->rev;
}
-static inline u16 rt2x00_rev(const struct rt2x00_chip *chipset, const u32 mask)
+static inline u16 rt2x00_check_rev(const struct rt2x00_chip *chipset,
+ const u32 rev)
{
- return chipset->rev & mask;
+ return (((chipset->rev & 0xffff0) == rev) &&
+ !!(chipset->rev & 0x0000f));
}
/*
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index 46c8c0840a6..dc640bf6b5e 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -1486,7 +1486,7 @@ static int rt73usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
rt73usb_register_read(rt2x00dev, MAC_CSR0, &reg);
rt2x00_set_chip(rt2x00dev, RT2571, value, reg);
- if (!rt2x00_rev(&rt2x00dev->chip, 0x25730)) {
+ if (!rt2x00_check_rev(&rt2x00dev->chip, 0x25730)) {
ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
return -ENODEV;
}