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authorYoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>2008-05-07 14:38:15 (GMT)
committerRalf Baechle <ralf@linux-mips.org>2008-06-05 17:13:16 (GMT)
commitcd9da13d6ef4f4b652a9a885d4a7c80e40fed229 (patch)
treeb7083b8eea03ce4f866c973ccd4504d9823e118c /arch/mips/mm
parent2cc3c0b67bdde7263f6eb16c16709e0b84047646 (diff)
downloadlinux-cd9da13d6ef4f4b652a9a885d4a7c80e40fed229.tar.xz
Fix divide by zero error in build_clear_page() and build_copy_page()
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mm')
-rw-r--r--arch/mips/mm/page.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/mips/mm/page.c b/arch/mips/mm/page.c
index d827d61..cab81f4 100644
--- a/arch/mips/mm/page.c
+++ b/arch/mips/mm/page.c
@@ -310,8 +310,8 @@ void __cpuinit build_clear_page(void)
if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x())
uasm_i_lui(&buf, AT, 0xa000);
- off = min(8, pref_bias_clear_store / cache_line_size) *
- cache_line_size;
+ off = cache_line_size ? min(8, pref_bias_clear_store / cache_line_size)
+ * cache_line_size : 0;
while (off) {
build_clear_pref(&buf, -off);
off -= cache_line_size;
@@ -454,12 +454,14 @@ void __cpuinit build_copy_page(void)
if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x())
uasm_i_lui(&buf, AT, 0xa000);
- off = min(8, pref_bias_copy_load / cache_line_size) * cache_line_size;
+ off = cache_line_size ? min(8, pref_bias_copy_load / cache_line_size) *
+ cache_line_size : 0;
while (off) {
build_copy_load_pref(&buf, -off);
off -= cache_line_size;
}
- off = min(8, pref_bias_copy_store / cache_line_size) * cache_line_size;
+ off = cache_line_size ? min(8, pref_bias_copy_load / cache_line_size) *
+ cache_line_size : 0;
while (off) {
build_copy_store_pref(&buf, -off);
off -= cache_line_size;