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authorJack Steiner <steiner@sgi.com>2009-12-15 16:48:14 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-16 07:20:16 -0800
commit9c13cb331f7054d537d4caa094d3ebbba544833a (patch)
tree7703c6eaa59065656eb7bede772b0dfd84cebd0d /drivers/misc/sgi-gru
parent1848a710287b33a92c3c5b2f4c3ae201a879eb7e (diff)
gru: add symbolic names for GRU error code
Use symbol names instead of numbers for error return values for the vtop functions. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc/sgi-gru')
-rw-r--r--drivers/misc/sgi-gru/grufault.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c
index a1b3a1d66af5..3e644042c805 100644
--- a/drivers/misc/sgi-gru/grufault.c
+++ b/drivers/misc/sgi-gru/grufault.c
@@ -40,6 +40,12 @@
#include "gru_instructions.h"
#include <asm/uv/uv_hub.h>
+/* Return codes for vtop functions */
+#define VTOP_SUCCESS 0
+#define VTOP_INVALID -1
+#define VTOP_RETRY -2
+
+
/*
* Test if a physical address is a valid GRU GSEG address
*/
@@ -280,12 +286,12 @@ static int gru_vtop(struct gru_thread_state *gts, unsigned long vaddr,
paddr = paddr & ~((1UL << ps) - 1);
*gpa = uv_soc_phys_ram_to_gpa(paddr);
*pageshift = ps;
- return 0;
+ return VTOP_SUCCESS;
inval:
- return -1;
+ return VTOP_INVALID;
upm:
- return -2;
+ return VTOP_RETRY;
}
@@ -412,9 +418,9 @@ static int gru_try_dropin(struct gru_thread_state *gts,
goto failactive;
ret = gru_vtop(gts, vaddr, write, atomic, &gpa, &pageshift);
- if (ret == -1)
+ if (ret == VTOP_INVALID)
goto failinval;
- if (ret == -2)
+ if (ret == VTOP_RETRY)
goto failupm;
if (!(gts->ts_sizeavail & GRU_SIZEAVAIL(pageshift))) {