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fsl_sata: Fix compiler warnings shown by gcc-4.4

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Update fsl_sata to use common structures instead of casting
back and forth between the fsl specific ones and the common ones
(which are identical).

fsl_sata.c: In function 'scan_sata':
fsl_sata.c:550: warning: dereferencing pointer 'cfis' does break strict-aliasing rules
fsl_sata.c:549: warning: dereferencing pointer 'cfis' does break strict-aliasing rules
fsl_sata.c:548: warning: dereferencing pointer 'cfis' does break strict-aliasing rules
fsl_sata.c:545: note: initialized from here
fsl_sata.c:592: warning: dereferencing pointer 'cfis' does break strict-aliasing rules
fsl_sata.c:590: warning: dereferencing pointer 'cfis' does break strict-aliasing rules
fsl_sata.c:588: warning: dereferencing pointer 'cfis' does break strict-aliasing rules
fsl_sata.c:586: warning: dereferencing pointer 'cfis' does break strict-aliasing rules
fsl_sata.c:579: warning: dereferencing pointer 'cfis' does break strict-aliasing rules
...

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
galak 2009-07-07 15:53:21 -05:00 committed by Wolfgang Denk
parent 20938e54a2
commit f14d81050a
2 changed files with 19 additions and 81 deletions
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54
drivers/block/fsl_sata.c
View File

@ -81,7 +81,7 @@ void dprint_buffer(unsigned char *buf, int len)
printf("\n\r");
}
static void fsl_sata_dump_sfis(struct sfis *s)
static void fsl_sata_dump_sfis(struct sata_fis_d2h *s)
{
printf("Status FIS dump:\n\r");
printf("fis_type: %02x\n\r", s->fis_type);
@ -347,7 +347,7 @@ static void fsl_sata_dump_regs(fsl_sata_reg_t *reg)
printf("SYSPR: %08x\n\r", in_be32(&reg->syspr));
}
static int fsl_ata_exec_ata_cmd(struct fsl_sata *sata, struct cfis *cfis,
static int fsl_ata_exec_ata_cmd(struct fsl_sata *sata, struct sata_fis_h2d *cfis,
int is_ncq, int tag, u8 *buffer, u32 len)
{
cmd_hdr_entry_t *cmd_hdr;
@ -483,7 +483,7 @@ static int fsl_ata_exec_ata_cmd(struct fsl_sata *sata, struct cfis *cfis,
if (val32) {
u32 der;
fsl_sata_dump_sfis((struct sfis *)cmd_desc->sfis);
fsl_sata_dump_sfis((struct sata_fis_d2h *)cmd_desc->sfis);
printf("CE at device\n\r");
fsl_sata_dump_regs(reg);
der = in_le32(&reg->der);
@ -498,13 +498,13 @@ static int fsl_ata_exec_ata_cmd(struct fsl_sata *sata, struct cfis *cfis,
return len;
}
static int fsl_ata_exec_reset_cmd(struct fsl_sata *sata, struct cfis *cfis,
static int fsl_ata_exec_reset_cmd(struct fsl_sata *sata, struct sata_fis_h2d *cfis,
int tag, u8 *buffer, u32 len)
{
return 0;
}
static int fsl_sata_exec_cmd(struct fsl_sata *sata, struct cfis *cfis,
static int fsl_sata_exec_cmd(struct fsl_sata *sata, struct sata_fis_h2d *cfis,
enum cmd_type command_type, int tag, u8 *buffer, u32 len)
{
int rc;
@ -539,11 +539,9 @@ static int fsl_sata_exec_cmd(struct fsl_sata *sata, struct cfis *cfis,
static void fsl_sata_identify(int dev, u16 *id)
{
fsl_sata_t *sata = (fsl_sata_t *)sata_dev_desc[dev].priv;
struct sata_fis_h2d h2d;
struct cfis *cfis;
struct sata_fis_h2d h2d, *cfis = &h2d;
cfis = (struct cfis *)&h2d;
memset((void *)cfis, 0, sizeof(struct cfis));
memset(cfis, 0, sizeof(struct sata_fis_h2d));
cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
cfis->pm_port_c = 0x80; /* is command */
@ -566,12 +564,10 @@ static void fsl_sata_xfer_mode(int dev, u16 *id)
static void fsl_sata_set_features(int dev)
{
fsl_sata_t *sata = (fsl_sata_t *)sata_dev_desc[dev].priv;
struct sata_fis_h2d h2d;
struct cfis *cfis;
struct sata_fis_h2d h2d, *cfis = &h2d;
u8 udma_cap;
cfis = (struct cfis *)&h2d;
memset((void *)cfis, 0, sizeof(struct cfis));
memset(cfis, 0, sizeof(struct sata_fis_h2d));
cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
cfis->pm_port_c = 0x80; /* is command */
@ -597,14 +593,12 @@ static void fsl_sata_set_features(int dev)
static u32 fsl_sata_rw_cmd(int dev, u32 start, u32 blkcnt, u8 *buffer, int is_write)
{
fsl_sata_t *sata = (fsl_sata_t *)sata_dev_desc[dev].priv;
struct sata_fis_h2d h2d;
struct cfis *cfis;
struct sata_fis_h2d h2d, *cfis = &h2d;
u32 block;
block = start;
cfis = (struct cfis *)&h2d;
memset((void *)cfis, 0, sizeof(struct cfis));
memset(cfis, 0, sizeof(struct sata_fis_h2d));
cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
cfis->pm_port_c = 0x80; /* is command */
@ -624,12 +618,9 @@ static u32 fsl_sata_rw_cmd(int dev, u32 start, u32 blkcnt, u8 *buffer, int is_wr
void fsl_sata_flush_cache(int dev)
{
fsl_sata_t *sata = (fsl_sata_t *)sata_dev_desc[dev].priv;
struct sata_fis_h2d h2d;
struct cfis *cfis;
struct sata_fis_h2d h2d, *cfis = &h2d;
cfis = (struct cfis *)&h2d;
memset((void *)cfis, 0, sizeof(struct cfis));
memset(cfis, 0, sizeof(struct sata_fis_h2d));
cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
cfis->pm_port_c = 0x80; /* is command */
@ -641,14 +632,12 @@ void fsl_sata_flush_cache(int dev)
static u32 fsl_sata_rw_cmd_ext(int dev, u32 start, u32 blkcnt, u8 *buffer, int is_write)
{
fsl_sata_t *sata = (fsl_sata_t *)sata_dev_desc[dev].priv;
struct sata_fis_h2d h2d;
struct cfis *cfis;
struct sata_fis_h2d h2d, *cfis = &h2d;
u64 block;
block = (u64)start;
cfis = (struct cfis *)&h2d;
memset((void *)cfis, 0, sizeof(struct cfis));
memset(cfis, 0, sizeof(struct sata_fis_h2d));
cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
cfis->pm_port_c = 0x80; /* is command */
@ -673,8 +662,7 @@ static u32 fsl_sata_rw_cmd_ext(int dev, u32 start, u32 blkcnt, u8 *buffer, int i
u32 fsl_sata_rw_ncq_cmd(int dev, u32 start, u32 blkcnt, u8 *buffer, int is_write)
{
fsl_sata_t *sata = (fsl_sata_t *)sata_dev_desc[dev].priv;
struct sata_fis_h2d h2d;
struct cfis *cfis;
struct sata_fis_h2d h2d, *cfis = &h2d;
int ncq_channel;
u64 block;
@ -684,9 +672,8 @@ u32 fsl_sata_rw_ncq_cmd(int dev, u32 start, u32 blkcnt, u8 *buffer, int is_write
}
block = (u64)start;
cfis = (struct cfis *)&h2d;
memset((void *)cfis, 0, sizeof(struct cfis));
memset(cfis, 0, sizeof(struct sata_fis_h2d));
cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
cfis->pm_port_c = 0x80; /* is command */
@ -718,12 +705,9 @@ u32 fsl_sata_rw_ncq_cmd(int dev, u32 start, u32 blkcnt, u8 *buffer, int is_write
void fsl_sata_flush_cache_ext(int dev)
{
fsl_sata_t *sata = (fsl_sata_t *)sata_dev_desc[dev].priv;
struct sata_fis_h2d h2d;
struct cfis *cfis;
struct sata_fis_h2d h2d, *cfis = &h2d;
cfis = (struct cfis *)&h2d;
memset((void *)cfis, 0, sizeof(struct cfis));
memset(cfis, 0, sizeof(struct sata_fis_h2d));
cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
cfis->pm_port_c = 0x80; /* is command */

46
drivers/block/fsl_sata.h
View File

@ -288,52 +288,6 @@ typedef struct cmd_desc {
#define SATA_HC_CMD_DESC_SIZE sizeof(struct cmd_desc)
#define SATA_HC_CMD_DESC_ALIGN 4
/*
* CFIS - Command FIS, which is H2D register FIS, the struct defination
* of Non-Queued command is different than NCQ command. see them is sata2.h
*/
typedef struct cfis {
u8 fis_type;
u8 pm_port_c;
u8 command;
u8 features;
u8 lba_low;
u8 lba_mid;
u8 lba_high;
u8 device;
u8 lba_low_exp;
u8 lba_mid_exp;
u8 lba_high_exp;
u8 features_exp;
u8 sector_count;
u8 sector_count_exp;
u8 res1;
u8 control;
u8 res2[4];
} __attribute__ ((packed)) cfis_t;
/*
* SFIS - Status FIS, which is D2H register FIS.
*/
typedef struct sfis {
u8 fis_type;
u8 pm_port_i;
u8 status;
u8 error;
u8 lba_low;
u8 lba_mid;
u8 lba_high;
u8 device;
u8 lba_low_exp;
u8 lba_mid_exp;
u8 lba_high_exp;
u8 res1;
u8 sector_count;
u8 sector_count_exp;
u8 res2[2];
u8 res3[4];
} __attribute__ ((packed)) sfis_t;
/*
* SATA device driver info
*/