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ARM: PL08x: avoid 'void *' struct fields when we can type them properly

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Avoid using 'void *' struct fields when the structs are not defined
in linux/amba/pl08x.h - instead, forward declare the struct names, and
use these instead.  This ensures we have proper typechecking.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Russell King - ARM Linux 2011-01-03 22:35:28 +00:00 committed by Dan Williams
parent f96ca9ec27
commit 7cb72ad959
2 changed files with 12 additions and 9 deletions
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16
drivers/dma/amba-pl08x.c
View File

@ -107,7 +107,7 @@ struct vendor_data {
* An LLI struct - see PL08x TRM. Note that next uses bit[0] as a bus bit,
* start & end do not - their bus bit info is in cctl.
*/
struct lli {
struct pl08x_lli {
dma_addr_t src;
dma_addr_t dst;
dma_addr_t next;
@ -160,7 +160,7 @@ struct pl08x_driver_data {
/* Maximum times we call dma_pool_alloc on this pool without freeing */
#define PL08X_MAX_ALLOCS 0x40
#define MAX_NUM_TSFR_LLIS (PL08X_LLI_TSFR_SIZE/sizeof(struct lli))
#define MAX_NUM_TSFR_LLIS (PL08X_LLI_TSFR_SIZE/sizeof(struct pl08x_lli))
#define PL08X_ALIGN 8
static inline struct pl08x_dma_chan *to_pl08x_chan(struct dma_chan *chan)
@ -354,8 +354,8 @@ static u32 pl08x_getbytes_chan(struct pl08x_dma_chan *plchan)
* currently active transaction.
*/
if (ch && txd) {
struct lli *llis_va = txd->llis_va;
struct lli *llis_bus = (struct lli *) txd->llis_bus;
struct pl08x_lli *llis_va = txd->llis_va;
struct pl08x_lli *llis_bus = (struct pl08x_lli *) txd->llis_bus;
u32 clli = readl(ch->base + PL080_CH_LLI);
/* First get the bytes in the current active LLI */
@ -558,8 +558,8 @@ static int pl08x_fill_lli_for_desc(struct pl08x_driver_data *pl08x,
struct pl08x_txd *txd, int num_llis, int len,
u32 cctl, u32 *remainder)
{
struct lli *llis_va = txd->llis_va;
struct lli *llis_bus = (struct lli *) txd->llis_bus;
struct pl08x_lli *llis_va = txd->llis_va;
struct pl08x_lli *llis_bus = (struct pl08x_lli *) txd->llis_bus;
BUG_ON(num_llis >= MAX_NUM_TSFR_LLIS);
@ -620,8 +620,8 @@ static int pl08x_fill_llis_for_desc(struct pl08x_driver_data *pl08x,
u32 cctl;
int max_bytes_per_lli;
int total_bytes = 0;
struct lli *llis_va;
struct lli *llis_bus;
struct pl08x_lli *llis_va;
struct pl08x_lli *llis_bus;
txd->llis_va = dma_pool_alloc(pl08x->pool, GFP_NOWAIT,
&txd->llis_bus);

5
include/linux/amba/pl08x.h
View File

@ -22,6 +22,9 @@
#include <linux/dmaengine.h>
#include <linux/interrupt.h>
struct pl08x_lli;
struct pl08x_driver_data;
/**
* struct pl08x_channel_data - data structure to pass info between
* platform and PL08x driver regarding channel configuration
@ -179,7 +182,7 @@ struct pl08x_dma_chan {
struct pl08x_txd *at;
unsigned long lockflags;
spinlock_t lock;
void *host;
struct pl08x_driver_data *host;
enum pl08x_dma_chan_state state;
bool slave;
struct pl08x_txd *waiting;