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git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
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>
authored by Yoichi Yuasa and committed by Ralf Baechle cd9da13d 2cc3c0b6
+6
-4
arch/mips/mm/page.c
+6
-4
arch/mips/mm/page.c
···
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if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x())
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uasm_i_lui(&buf, AT, 0xa000);
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-
off = min(8, pref_bias_clear_store / cache_line_size) *
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-
cache_line_size;
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+
off = cache_line_size ? min(8, pref_bias_clear_store / cache_line_size)
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+
* cache_line_size : 0;
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while (off) {
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build_clear_pref(&buf, -off);
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off -= cache_line_size;
···
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if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x())
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uasm_i_lui(&buf, AT, 0xa000);
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-
off = min(8, pref_bias_copy_load / cache_line_size) * cache_line_size;
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+
off = cache_line_size ? min(8, pref_bias_copy_load / cache_line_size) *
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+
cache_line_size : 0;
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while (off) {
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build_copy_load_pref(&buf, -off);
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off -= cache_line_size;
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}
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-
off = min(8, pref_bias_copy_store / cache_line_size) * cache_line_size;
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+
off = cache_line_size ? min(8, pref_bias_copy_load / cache_line_size) *
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+
cache_line_size : 0;
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while (off) {
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build_copy_store_pref(&buf, -off);
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off -= cache_line_size;