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>

1 files changed, 6 insertions, 6 deletions

diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c
index 3918d2cc585..775c579817b 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 |