AVR32: Fix thinko in generic_find_next_zero_le_bit()

The existing implementation of this function seems to be looking for
a one although it should be looking for a zero. This causes trouble
for the ext2 filesystem, which tends to report -ENOSPC without this
patch.

Fix this by complementing each word before scanning.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/avr32/lib/findbit.S b/arch/avr32/lib/findbit.S
index 2b4856f4bf7c..c6b91dee857c 100644
--- a/arch/avr32/lib/findbit.S
+++ b/arch/avr32/lib/findbit.S
@@ -136,6 +136,7 @@ ENTRY(generic_find_next_zero_le_bit)
         /* offset is not word-aligned. Handle the first (32 - r10) bits */
         ldswp.w r8, r12[0]
         sub     r12, -4
+        com     r8
         lsr     r8, r8, r10
         brne    .L_found
 
@@ -146,7 +147,7 @@ ENTRY(generic_find_next_zero_le_bit)
 
         /* Main loop. offset must be word-aligned */
 1:      ldswp.w r8, r12[0]
-        cp.w    r8, 0
+        com     r8
         brne    .L_found
         sub     r12, -4
         sub     r9, 32