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-rw-r--r--arch/mips/mm/c-r4k.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 1b71d91e8268..0668e9bfce41 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -235,7 +235,9 @@ static inline void r4k_blast_scache_page_setup(void)
235{ 235{
236 unsigned long sc_lsize = cpu_scache_line_size(); 236 unsigned long sc_lsize = cpu_scache_line_size();
237 237
238 if (sc_lsize == 16) 238 if (scache_size == 0)
239 r4k_blast_scache_page = (void *)no_sc_noop;
240 else if (sc_lsize == 16)
239 r4k_blast_scache_page = blast_scache16_page; 241 r4k_blast_scache_page = blast_scache16_page;
240 else if (sc_lsize == 32) 242 else if (sc_lsize == 32)
241 r4k_blast_scache_page = blast_scache32_page; 243 r4k_blast_scache_page = blast_scache32_page;
@@ -251,7 +253,9 @@ static inline void r4k_blast_scache_page_indexed_setup(void)
251{ 253{
252 unsigned long sc_lsize = cpu_scache_line_size(); 254 unsigned long sc_lsize = cpu_scache_line_size();
253 255
254 if (sc_lsize == 16) 256 if (scache_size == 0)
257 r4k_blast_scache_page_indexed = (void *)no_sc_noop;
258 else if (sc_lsize == 16)
255 r4k_blast_scache_page_indexed = blast_scache16_page_indexed; 259 r4k_blast_scache_page_indexed = blast_scache16_page_indexed;
256 else if (sc_lsize == 32) 260 else if (sc_lsize == 32)
257 r4k_blast_scache_page_indexed = blast_scache32_page_indexed; 261 r4k_blast_scache_page_indexed = blast_scache32_page_indexed;
@@ -267,7 +271,9 @@ static inline void r4k_blast_scache_setup(void)
267{ 271{
268 unsigned long sc_lsize = cpu_scache_line_size(); 272 unsigned long sc_lsize = cpu_scache_line_size();
269 273
270 if (sc_lsize == 16) 274 if (scache_size == 0)
275 r4k_blast_scache = (void *)no_sc_noop;
276 else if (sc_lsize == 16)
271 r4k_blast_scache = blast_scache16; 277 r4k_blast_scache = blast_scache16;
272 else if (sc_lsize == 32) 278 else if (sc_lsize == 32)
273 r4k_blast_scache = blast_scache32; 279 r4k_blast_scache = blast_scache32;
@@ -482,7 +488,7 @@ static inline void local_r4k_flush_icache_range(void *args)
482 protected_blast_dcache_range(start, end); 488 protected_blast_dcache_range(start, end);
483 } 489 }
484 490
485 if (!cpu_icache_snoops_remote_store) { 491 if (!cpu_icache_snoops_remote_store && scache_size) {
486 if (end - start > scache_size) 492 if (end - start > scache_size)
487 r4k_blast_scache(); 493 r4k_blast_scache();
488 else 494 else
@@ -651,7 +657,7 @@ static void local_r4k_flush_cache_sigtramp(void * arg)
651 657
652 R4600_HIT_CACHEOP_WAR_IMPL; 658 R4600_HIT_CACHEOP_WAR_IMPL;
653 protected_writeback_dcache_line(addr & ~(dc_lsize - 1)); 659 protected_writeback_dcache_line(addr & ~(dc_lsize - 1));
654 if (!cpu_icache_snoops_remote_store) 660 if (!cpu_icache_snoops_remote_store && scache_size)
655 protected_writeback_scache_line(addr & ~(sc_lsize - 1)); 661 protected_writeback_scache_line(addr & ~(sc_lsize - 1));
656 protected_flush_icache_line(addr & ~(ic_lsize - 1)); 662 protected_flush_icache_line(addr & ~(ic_lsize - 1));
657 if (MIPS4K_ICACHE_REFILL_WAR) { 663 if (MIPS4K_ICACHE_REFILL_WAR) {