diff options
| author |   Giuseppe Cavallaro <peppe.cavallaro@st.com> | 2009-08-24 18:59:09 +0900 |
|---|---|---|
| committer |   Paul Mundt <lethal@linux-sh.org> | 2009-08-24 18:59:09 +0900 |
| commit | 788e6af37a4ace8721eda72e4abe66fe0f6b49fd (patch) | |
| tree | 121e2d52430dbe5adfb04549bd2c17480e93983f | |
| parent | sh: Fix problems with cache flushing when cache is in write-through mode (diff) | |
| download | linux-dev-788e6af37a4ace8721eda72e4abe66fe0f6b49fd.tar.xz linux-dev-788e6af37a4ace8721eda72e4abe66fe0f6b49fd.zip | |
sh: fix sys_cacheflush error checking
sys_cacheflush should return with EINVAL if the cache parameter is not
one of ICACHE, DCACHE or BCACHE.
So, we need to include 0 in the first check.
It also adds the three definitions above as wrapper of the existent macros.
PS: ltp cacheflush01 test now passes.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| -rw-r--r-- | arch/sh/include/asm/cachectl.h | 7 | ||||
| -rw-r--r-- | arch/sh/kernel/sys_sh.c | 2 |
2 files changed, 8 insertions, 1 deletions
diff --git a/arch/sh/include/asm/cachectl.h b/arch/sh/include/asm/cachectl.h index 305dd7082a66..6ffb4b7a212e 100644 --- a/arch/sh/include/asm/cachectl.h +++ b/arch/sh/include/asm/cachectl.h @@ -9,4 +9,11 @@ #define CACHEFLUSH_I 0x4 +/* + * Options for cacheflush system call + */ +#define ICACHE CACHEFLUSH_I /* flush instruction cache */ +#define DCACHE CACHEFLUSH_D_PURGE /* writeback and flush data cache */ +#define BCACHE (ICACHE|DCACHE) /* flush both caches */ + #endif /* _SH_CACHECTL_H */ diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c index ec65dd8842b1..8aa5d1ceaf14 100644 --- a/arch/sh/kernel/sys_sh.c +++ b/arch/sh/kernel/sys_sh.c @@ -186,7 +186,7 @@ asmlinkage int sys_cacheflush(unsigned long addr, unsigned long len, int op) { struct vm_area_struct *vma; - if ((op < 0) || (op > (CACHEFLUSH_D_PURGE|CACHEFLUSH_I))) + if ((op <= 0) || (op > (CACHEFLUSH_D_PURGE|CACHEFLUSH_I))) return -EINVAL; /* |