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| author | James Hogan <james.hogan@imgtec.com> | 2013-11-14 11:14:37 +0100 |
|---|---|---|
| committer | James Hogan <james.hogan@imgtec.com> | 2013-11-25 11:50:27 +0100 |
| commit | cdf8d75818e3cd30746d38f5fbcdb3745fd267a3 (patch) | |
| tree | 93066237e17d9f3205a71d9edd72c083e9c84f7d /arch/metag | |
| parent | Linux 3.13-rc1 (diff) | |
| download | linux-cdf8d75818e3cd30746d38f5fbcdb3745fd267a3.tar.xz linux-cdf8d75818e3cd30746d38f5fbcdb3745fd267a3.zip | |
metag: dma: remove dead code in dma_alloc_init()
Meta has 2 levels of page table so the pmd folds into the pud which
folds into the pgd. Therefore the !pmd check in dma_alloc_init() is dead
code since it essentially checks whether:
(init_mm->pgd + 0x770) == 0
Remove the check.
Reported-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Diffstat (limited to 'arch/metag')
| -rw-r--r-- | arch/metag/kernel/dma.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/metag/kernel/dma.c b/arch/metag/kernel/dma.c index db589ad5dbc4..c700d625067a 100644 --- a/arch/metag/kernel/dma.c +++ b/arch/metag/kernel/dma.c @@ -399,11 +399,6 @@ static int __init dma_alloc_init(void) pgd = pgd_offset(&init_mm, CONSISTENT_START); pud = pud_alloc(&init_mm, pgd, CONSISTENT_START); pmd = pmd_alloc(&init_mm, pud, CONSISTENT_START); - if (!pmd) { - pr_err("%s: no pmd tables\n", __func__); - ret = -ENOMEM; - break; - } WARN_ON(!pmd_none(*pmd)); pte = pte_alloc_kernel(pmd, CONSISTENT_START); |