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gru: add symbolic names for GRU error code

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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>
This commit is contained in:
Jack Steiner 2009-12-15 16:48:14 -08:00 committed by Linus Torvalds
parent 1848a71028
commit 9c13cb331f
1 changed files with 11 additions and 5 deletions
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16
drivers/misc/sgi-gru/grufault.c
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@ -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))) {