[PATCH][MIPS] fix divide by zero error in build_clear_page and build_copy_page
From: Yoichi Yuasa <hidden>
Date: 2008-05-07 14:38:27
Fix divide by zero error in build_clear_page() and build_copy_page() Signed-off-by: Yoichi Yuasa <redacted> diff -pruN -X /home/yuasa/Memo/dontdiff linux-orig/arch/mips/mm/page.c linux/arch/mips/mm/page.c
--- linux-orig/arch/mips/mm/page.c 2008-05-07 10:28:03.732151097 +0900
+++ linux/arch/mips/mm/page.c 2008-05-07 23:27:00.212977534 +0900@@ -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;