diff options
| author | Michael Büsch <mb@bu3sch.de> | 2011-02-15 00:21:50 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-02-18 16:53:20 -0500 |
| commit | 8c68bd401d423c81fd4bfc19c625180528e4a5e8 (patch) | |
| tree | dc96f89a1a11972ac7fe716a8ec154fe22407b5a /drivers/ssb | |
| parent | f4f314bf6fd39d85065c3fcda27bd594163abcf0 (diff) | |
| download | linux-8c68bd401d423c81fd4bfc19c625180528e4a5e8.tar.gz linux-8c68bd401d423c81fd4bfc19c625180528e4a5e8.tar.bz2 linux-8c68bd401d423c81fd4bfc19c625180528e4a5e8.zip | |
ssb: Make ssb_wait_bit multi-bit safe
ssb_wait_bit was designed for only one-bit bitmasks.
People start using it for multi-bit bitmasks. Make the "set" case
is safe for this. The "unset" case is already safe.
This does not change behavior of the current code.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/ssb')
| -rw-r--r-- | drivers/ssb/main.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c index 3918d2cc5856..775c579817b4 100644 --- a/drivers/ssb/main.c +++ b/drivers/ssb/main.c @@ -1192,10 +1192,10 @@ void ssb_device_enable(struct ssb_device *dev, u32 core_specific_flags) } EXPORT_SYMBOL(ssb_device_enable); -/* Wait for a bit in a register to get set or unset. +/* Wait for bitmask in a register to get set or cleared. * timeout is in units of ten-microseconds */ -static int ssb_wait_bit(struct ssb_device *dev, u16 reg, u32 bitmask, - int timeout, int set) +static int ssb_wait_bits(struct ssb_device *dev, u16 reg, u32 bitmask, + int timeout, int set) { int i; u32 val; @@ -1203,7 +1203,7 @@ static int ssb_wait_bit(struct ssb_device *dev, u16 reg, u32 bitmask, for (i = 0; i < timeout; i++) { val = ssb_read32(dev, reg); if (set) { - if (val & bitmask) + if ((val & bitmask) == bitmask) return 0; } else { if (!(val & bitmask)) @@ -1227,8 +1227,8 @@ void ssb_device_disable(struct ssb_device *dev, u32 core_specific_flags) reject = ssb_tmslow_reject_bitmask(dev); ssb_write32(dev, SSB_TMSLOW, reject | SSB_TMSLOW_CLOCK); - ssb_wait_bit(dev, SSB_TMSLOW, reject, 1000, 1); - ssb_wait_bit(dev, SSB_TMSHIGH, SSB_TMSHIGH_BUSY, 1000, 0); + ssb_wait_bits(dev, SSB_TMSLOW, reject, 1000, 1); + ssb_wait_bits(dev, SSB_TMSHIGH, SSB_TMSHIGH_BUSY, 1000, 0); ssb_write32(dev, SSB_TMSLOW, SSB_TMSLOW_FGC | SSB_TMSLOW_CLOCK | reject | SSB_TMSLOW_RESET | |