Re: [PATCH 6/6] [ARM] Use atomic_spin_lock/atomic_spin_unlock for irqdesc lock
From: Uwe Kleine-König <hidden>
Date: 2009-08-07 20:54:12
Also in:
lkml
Hello,
quoted hunk ↗ jump to hunk
diff --git a/mm/highmem.c b/mm/highmem.c index 66e915a..214eefd 100644 --- a/mm/highmem.c +++ b/mm/highmem.c@@ -372,8 +372,8 @@ void *kmap_high_get(struct page *page) lock_kmap_any(flags); vaddr = (unsigned long)page_address(page); if (vaddr) { - BUG_ON(pkmap_count[PKMAP_NR(vaddr)] < 1); - pkmap_count[PKMAP_NR(vaddr)]++; + BUG_ON(atomic_read(&pkmap_count[PKMAP_NR(vaddr)]) < 1); + atomic_add(1, pkmap_count[PKMAP_NR(vaddr)]); } unlock_kmap_any(flags); return (void*) vaddr;
ups, this hunk doesn't belong here. I will follow up with a corrected patch. Sorry Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ |