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| author | Sergey Shtylyov <s.shtylyov@omp.ru> | 2022-02-19 23:04:29 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-08 19:01:56 +0100 |
| commit | 0b79c5dd7bb56da0c57f8272d1746f8594b4fdac (patch) | |
| tree | 7f7252f4ce46851f71f4a2d7272a9083c9d57be3 | |
| parent | 70959fa1a003cb7c6ed2fd0e0f887125d08b8bf6 (diff) | |
| download | linux-0b79c5dd7bb56da0c57f8272d1746f8594b4fdac.tar.gz linux-0b79c5dd7bb56da0c57f8272d1746f8594b4fdac.tar.bz2 linux-0b79c5dd7bb56da0c57f8272d1746f8594b4fdac.zip | |
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: 669a5db411d8 ("[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>
| -rw-r--r-- | drivers/ata/pata_hpt37x.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c index 821fc1f2324c..44cc02afaa8b 100644 --- a/drivers/ata/pata_hpt37x.c +++ b/drivers/ata/pata_hpt37x.c @@ -964,14 +964,14 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id) if ((freq >> 12) != 0xABCDE) { int i; - u8 sr; + u16 sr; u32 total = 0; pr_warn("BIOS has not set timing clocks\n"); /* This is the process the HPT371 BIOS is reported to use */ for (i = 0; i < 128; i++) { - pci_read_config_byte(dev, 0x78, &sr); + pci_read_config_word(dev, 0x78, &sr); total += sr & 0x1FF; udelay(15); } |