pata_cs5535: no need to program PIO0 timings during device init (73222c2d) · Commits · 戴 / test

drivers/ata/pata_cs5535.c

+0 −12

Original line number	Diff line number	Diff line
		@@ -67,8 +67,6 @@

		#define CS5535_CABLE_DETECT 0x48

		#define CS5535_BAD_PIO(timings) ( (timings&~0x80000000UL)==0x00009172 )

		/**
		* cs5535_cable_detect - detect cable type
		* @ap: Port to detect on
		@@ -188,16 +186,6 @@ static int cs5535_init_one(struct pci_dev dev, const struct pci_device_id id)
		};
		const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info };

		u32 timings, dummy;

		/* Check the BIOS set the initial timing clock. If not set the
		timings for PIO0 */
		rdmsr(ATAC_CH0D0_PIO, timings, dummy);
		if (CS5535_BAD_PIO(timings))
		wrmsr(ATAC_CH0D0_PIO, 0xF7F4F7F4UL, 0);
		rdmsr(ATAC_CH0D1_PIO, timings, dummy);
		if (CS5535_BAD_PIO(timings))
		wrmsr(ATAC_CH0D1_PIO, 0xF7F4F7F4UL, 0);
		return ata_pci_bmdma_init_one(dev, ppi, &cs5535_sht, NULL, 0);
		}