Blackfin: isram: add unlikely to sanity checks

Don't want the compiler assuming the rare sanity checks are the norm and
optimize for those paths.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/arch/blackfin/mm/isram-driver.c b/arch/blackfin/mm/isram-driver.c
index 84cdc5a..9213e23 100644 (file)
--- a/arch/blackfin/mm/isram-driver.c
+++ b/arch/blackfin/mm/isram-driver.c
@@ -62,7 +62,7 @@ static void isram_write(const void *addr, uint64_t data)
        uint32_t cmd;
        unsigned long flags;
 
-       if (addr >= (void *)(L1_CODE_START + L1_CODE_LENGTH))
+       if (unlikely(addr >= (void *)(L1_CODE_START + L1_CODE_LENGTH)))
                return;
 
        cmd = IADDR2DTEST(addr) | 2;             /* write */
@@ -93,7 +93,7 @@ static uint64_t isram_read(const void *addr)
        unsigned long flags;
        uint64_t ret;
 
-       if (addr > (void *)(L1_CODE_START + L1_CODE_LENGTH))
+       if (unlikely(addr > (void *)(L1_CODE_START + L1_CODE_LENGTH)))
                return 0;
 
        cmd = IADDR2DTEST(addr) | 0;              /* read */
@@ -120,7 +120,7 @@ static bool isram_check_addr(const void *addr, size_t n)
 {
        if ((addr >= (void *)L1_CODE_START) &&
            (addr < (void *)(L1_CODE_START + L1_CODE_LENGTH))) {
-               if ((addr + n) > (void *)(L1_CODE_START + L1_CODE_LENGTH)) {
+               if (unlikely((addr + n) > (void *)(L1_CODE_START + L1_CODE_LENGTH))) {
                        show_stack(NULL, NULL);
                        pr_err("copy involving %p length (%zu) too long\n", addr, n);
                }