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authorHaavard Skinnemoen <hskinnemoen@atmel.com>2006-10-31 14:01:11 -0500
committerHaavard Skinnemoen <hskinnemoen@atmel.com>2006-11-06 04:43:24 -0500
commit168c8fa32ff40d6caf7226a5abf2a0096f3393bf (patch)
treeb58f6a66a4325e83482cbc43d88fae7c9ee1054a
parente9a43850e6a99e335c8120579749389b376bc204 (diff)
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>
-rw-r--r--arch/avr32/lib/findbit.S3
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)
136 /* offset is not word-aligned. Handle the first (32 - r10) bits */ 136 /* offset is not word-aligned. Handle the first (32 - r10) bits */
137 ldswp.w r8, r12[0] 137 ldswp.w r8, r12[0]
138 sub r12, -4 138 sub r12, -4
139 com r8
139 lsr r8, r8, r10 140 lsr r8, r8, r10
140 brne .L_found 141 brne .L_found
141 142
@@ -146,7 +147,7 @@ ENTRY(generic_find_next_zero_le_bit)
146 147
147 /* Main loop. offset must be word-aligned */ 148 /* Main loop. offset must be word-aligned */
1481: ldswp.w r8, r12[0] 1491: ldswp.w r8, r12[0]
149 cp.w r8, 0 150 com r8
150 brne .L_found 151 brne .L_found
151 sub r12, -4 152 sub r12, -4
152 sub r9, 32 153 sub r9, 32