Re: [PATCH] Introduce BROKEN_ON_64BIT facility

Matthew Wilcox
2006-10-02T15:18:53Z

On Mon, Oct 02, 2006 at 04:12:35PM +0100, Alan Cox wrote:
> @@ -1423,14 +1418,15 @@
> printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
> goto err_out;
> }
> - iadev->rx_dle_q.start = (struct dle*)dle_addr;
> + iadev->rx_dle_q.start = (struct dle *)dle_addr;
> iadev->rx_dle_q.read = iadev->rx_dle_q.start;
> iadev->rx_dle_q.write = iadev->rx_dle_q.start;
> - iadev->rx_dle_q.end = (struct dle*)((u32)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
> + iadev->rx_dle_q.end = (struct dle*)((unsigned long)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
> /* the end of the dle q points to the entry after the last
> DLE that can be used. */

dle_addr is a bit strange. How about:

+++ b/drivers/atm/iphase.c
@@ -1404,7 +1404,7 @@ static int rx_init(struct atm_dev *dev)
IADEV *iadev;
struct rx_buf_desc __iomem *buf_desc_ptr;
unsigned long rx_pkt_start = 0;
- void *dle_addr;
+ struct dle *dle_addr;
struct abr_vc_table *abr_vc_table;
u16 *vc_table;
u16 *reass_table;
@@ -1423,10 +1423,10 @@ static int rx_init(struct atm_dev *dev)
printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
goto err_out;
}
- iadev->rx_dle_q.start = (struct dle*)dle_addr;
+ iadev->rx_dle_q.start = dle_addr;
iadev->rx_dle_q.read = iadev->rx_dle_q.start;
iadev->rx_dle_q.write = iadev->rx_dle_q.start;
- iadev->rx_dle_q.end = (struct dle*)((u32)dle_addr+sizeof(struct dle)*DLE
_ENTRIES);
+ iadev->rx_dle_q.end = dle_addr + DLE_ENTRIES;
/* the end of the dle q points to the entry after the last
DLE that can be used. */

@@ -1884,7 +1884,7 @@ static int tx_init(struct atm_dev *dev)
IADEV *iadev;
struct tx_buf_desc *buf_desc_ptr;
unsigned int tx_pkt_start;
- void *dle_addr;
+ struct dle *dle_addr;
int i;
u_short tcq_st_adr;
u_short *tcq_start;
@@ -1908,10 +1908,10 @@ static int tx_init(struct atm_dev *dev)
printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
goto err_out;
}
- iadev->tx_dle_q.start = (struct dle*)dle_addr;
+ iadev->tx_dle_q.start = dle_addr;
iadev->tx_dle_q.read = iadev->tx_dle_q.start;
iadev->tx_dle_q.write = iadev->tx_dle_q.start;
- iadev->tx_dle_q.end = (struct dle*)((u32)dle_addr+sizeof(struct dle)*DLE
_ENTRIES);
+ iadev->tx_dle_q.end = dle_addr + DLE_ENTRIES;

/* write the upper 20 bits of the start address to tx list address regis
ter */
writel(iadev->tx_dle_dma & 0xfffff000,

(whitespace damaged; more for comment than for application).

> - if ((u32)skb->data & 3) {
> + if ((unsigned long)skb->data & 3) {

I suppose it quietens a compiler warning. Doesn't actually fix a bug
though.