ata: pata_hpt37x: fix PCI clock detection
[ Upstream commit 5f6b0f2d037c8864f20ff15311c695f65eb09db5 ]
The f_CNT register (at the PCI config. address 0x78) is 16-bit, not
8-bit! The bug was there from the very start... :-(
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Fixes: 669a5db411
("[libata] Add a bunch of PATA drivers.")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -961,14 +961,14 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
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if ((freq >> 12) != 0xABCDE) {
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if ((freq >> 12) != 0xABCDE) {
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int i;
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int i;
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u8 sr;
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u16 sr;
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u32 total = 0;
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u32 total = 0;
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pr_warn("BIOS has not set timing clocks\n");
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pr_warn("BIOS has not set timing clocks\n");
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/* This is the process the HPT371 BIOS is reported to use */
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/* This is the process the HPT371 BIOS is reported to use */
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for (i = 0; i < 128; i++) {
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for (i = 0; i < 128; i++) {
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pci_read_config_byte(dev, 0x78, &sr);
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pci_read_config_word(dev, 0x78, &sr);
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total += sr & 0x1FF;
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total += sr & 0x1FF;
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udelay(15);
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udelay(15);
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}
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}
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