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ATA: Squash warnings in mxc_ata.

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mxc_ata.c: In function ‘set_ata_bus_timing’:
mxc_ata.c:118: warning: dereferencing type-punned pointer will break
strict-aliasing rules
mxc_ata.c:125: warning: dereferencing type-punned pointer will break
strict-aliasing rules
mxc_ata.c:129: warning: dereferencing type-punned pointer will break
strict-aliasing rules

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Marek Vasut 2011-09-23 00:04:49 +00:00 • committed by Albert ARIBAUD
parent db545e49b7
commit e063342c0e
1 changed files with 9 additions and 13 deletions
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22
drivers/block/mxc_ata.c
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@ -96,7 +96,6 @@ static uint16_t pio_tA[NR_PIO_SPECS] = { 50, 50, 50, 50, 50 };
#define REG2OFF(reg) ((((uint32_t)reg) & 0x3) * 8) #define REG2OFF(reg) ((((uint32_t)reg) & 0x3) * 8)
static void set_ata_bus_timing(unsigned char mode) static void set_ata_bus_timing(unsigned char mode)
{ {
uint32_t val;
uint32_t T = 1000000000 / mxc_get_clock(MXC_IPG_CLK); uint32_t T = 1000000000 / mxc_get_clock(MXC_IPG_CLK);
struct mxc_ata_config_regs *ata_regs; struct mxc_ata_config_regs *ata_regs;
@ -106,22 +105,19 @@ static void set_ata_bus_timing(unsigned char mode)
return; return;
/* Write TIME_OFF/ON/1/2W */ /* Write TIME_OFF/ON/1/2W */
val = (3 << REG2OFF(&ata_regs->time_off)) | writeb(3, &ata_regs->time_off);
(3 << REG2OFF(&ata_regs->time_on)) | writeb(3, &ata_regs->time_on);
(((pio_t1[mode] + T) / T) << REG2OFF(&ata_regs->time_1)) | writeb((pio_t1[mode] + T) / T, &ata_regs->time_1);
(((pio_t2_8[mode] + T) / T) << REG2OFF(&ata_regs->time_2w)); writeb((pio_t2_8[mode] + T) / T, &ata_regs->time_2w);
writel(val, &ata_regs->time_off);
/* Write TIME_2R/AX/RDX/4 */ /* Write TIME_2R/AX/RDX/4 */
val = (((pio_t2_8[mode] + T) / T) << REG2OFF(&ata_regs->time_2r)) | writeb((pio_t2_8[mode] + T) / T, &ata_regs->time_2r);
(((pio_tA[mode] + T) / T + 2) << REG2OFF(&ata_regs->time_ax)) | writeb((pio_tA[mode] + T) / T + 2, &ata_regs->time_ax);
(1 << REG2OFF(&ata_regs->time_pio_rdx)) | writeb(1, &ata_regs->time_pio_rdx);
(((pio_t4[mode] + T) / T) << REG2OFF(&ata_regs->time_4)); writeb((pio_t4[mode] + T) / T, &ata_regs->time_4);
writel(val, &ata_regs->time_2r);
/* Write TIME_9 ; the rest of timing registers is irrelevant for PIO */ /* Write TIME_9 ; the rest of timing registers is irrelevant for PIO */
val = (((pio_t9[mode] + T) / T) << REG2OFF(&ata_regs->time_9)); writeb((pio_t9[mode] + T) / T, &ata_regs->time_9);
writel(val, &ata_regs->time_9);
} }
int ide_preinit(void) int ide_preinit(void)