cnic: Fix big endian bug

The chip's page tables did not set up properly on big endian machines,
causing EEH errors on PPC machines.

Reported-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c
index 263a294..7ff170c 100644 (file)
--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -699,13 +699,13 @@ static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
 static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 {
        int i;
-       u32 *page_table = dma->pgtbl;
+       __le32 *page_table = (__le32 *) dma->pgtbl;
 
        for (i = 0; i < dma->num_pages; i++) {
                /* Each entry needs to be in big endian format. */
-               *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
+               *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
                page_table++;
-               *page_table = (u32) dma->pg_map_arr[i];
+               *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
                page_table++;
        }
 }
@@ -713,13 +713,13 @@ static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
 static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
 {
        int i;
-       u32 *page_table = dma->pgtbl;
+       __le32 *page_table = (__le32 *) dma->pgtbl;
 
        for (i = 0; i < dma->num_pages; i++) {
                /* Each entry needs to be in little endian format. */
-               *page_table = dma->pg_map_arr[i] & 0xffffffff;
+               *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
                page_table++;
-               *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
+               *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
                page_table++;
        }
 }