GRU driver: minor updates

A few minor updates for the GRU driver.
	- documentation changes found in code reviews
	- changes to #ifdefs to make them recognized by "unifdef"
	  (used in simulator testing)
	- change GRU context load/unload to prefetch data

[akpm@linux-foundation.org: fix typo in comment]
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>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/misc/sgi-gru/grufile.c b/drivers/misc/sgi-gru/grufile.c
index d61cee796efd..5c027b6b4e5a 100644
--- a/drivers/misc/sgi-gru/grufile.c
+++ b/drivers/misc/sgi-gru/grufile.c
@@ -113,7 +113,7 @@ static int gru_file_mmap(struct file *file, struct vm_area_struct *vma)
                 return -EPERM;
 
         if (vma->vm_start & (GRU_GSEG_PAGESIZE - 1) ||
-                        vma->vm_end & (GRU_GSEG_PAGESIZE - 1))
+                                vma->vm_end & (GRU_GSEG_PAGESIZE - 1))
                 return -EINVAL;
 
         vma->vm_flags |=
@@ -398,6 +398,12 @@ static int __init gru_init(void)
         irq = get_base_irq();
         for (chip = 0; chip < GRU_CHIPLETS_PER_BLADE; chip++) {
                 ret = request_irq(irq + chip, gru_intr, 0, id, NULL);
+                /* TODO: fix irq handling on x86. For now ignore failures because
+                 * interrupts are not required & not yet fully supported */
+                if (ret) {
+                        printk("!!!WARNING: GRU ignoring request failure!!!\n");
+                        ret = 0;
+                }
                 if (ret) {
                         printk(KERN_ERR "%s: request_irq failed\n",
                                GRU_DRIVER_ID_STR);