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libata: pata_pdc2027x PLL detection minor cleanup 

Minor cleanup to remove the unneeded rmb()s per Jeff's advice. Also removed the
pll_clock < 0 check since pll_clock now guaranteed to be >= 0 after Mikael's patch.

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Albert Lee 2007-08-20 16:56:29 +08:00 committed by Jeff Garzik
parent c7293870a9
commit e923090ddd
1 changed files with 0 additions and 5 deletions
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5
drivers/ata/pata_pdc2027x.c
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@ -561,12 +561,10 @@ static long pdc_read_counter(struct ata_host *host)
retry:
bccrl = readl(mmio_base + PDC_BYTE_COUNT) & 0x7fff;
bccrh = readl(mmio_base + PDC_BYTE_COUNT + 0x100) & 0x7fff;
rmb();
/* Read the counter values again for verification */
bccrlv = readl(mmio_base + PDC_BYTE_COUNT) & 0x7fff;
bccrhv = readl(mmio_base + PDC_BYTE_COUNT + 0x100) & 0x7fff;
rmb();
counter = (bccrh << 15) | bccrl;
@ -741,9 +739,6 @@ static int pdc_hardware_init(struct ata_host *host, unsigned int board_idx)
*/
pll_clock = pdc_detect_pll_input_clock(host);
if (pll_clock < 0) /* counter overflow? Try again. */
pll_clock = pdc_detect_pll_input_clock(host);
dev_printk(KERN_INFO, host->dev, "PLL input clock %ld kHz\n", pll_clock/1000);
/* Adjust PLL control register */