ARM: 7166/1: Use PMD_SHIFT instead of PGDIR_SHIFT in dma-consistent.c

Commit 99d1717d (ARM: Add init_consistent_dma_size()) introduces dynamic
allocation of the consistent_pte array. The number of PTEs should be
calculated based on the number of PMD entries rather than PGD, hence the
PMD_SHIFT.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Jon Medhurst <tixy@yxit.co.uk>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index e4e7f6c..ab58456 100644 (file)
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -168,7 +168,7 @@ static int __init consistent_init(void)
        pte_t *pte;
        int i = 0;
        unsigned long base = consistent_base;
-       unsigned long num_ptes = (CONSISTENT_END - base) >> PGDIR_SHIFT;
+       unsigned long num_ptes = (CONSISTENT_END - base) >> PMD_SHIFT;
 
        consistent_pte = kmalloc(num_ptes * sizeof(pte_t), GFP_KERNEL);
        if (!consistent_pte) {