diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 77138a39eb04..a8fd0c3e59b3 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -870,7 +870,11 @@ static unsigned int ata_id_xfermask(const u16 *id) * the PIO timing number for the maximum. Turn it into * a mask. */ - pio_mask = (2 << (id[ATA_ID_OLD_PIO_MODES] & 0xFF)) - 1 ; + u8 mode = id[ATA_ID_OLD_PIO_MODES] & 0xFF; + if (mode < 5) /* Valid PIO range */ + pio_mask = (2 << mode) - 1; + else + pio_mask = 1; /* But wait.. there's more. Design your standards by * committee and you too can get a free iordy field to @@ -6118,7 +6122,6 @@ EXPORT_SYMBOL_GPL(ata_std_prereset); EXPORT_SYMBOL_GPL(ata_std_softreset); EXPORT_SYMBOL_GPL(sata_std_hardreset); EXPORT_SYMBOL_GPL(ata_std_postreset); -EXPORT_SYMBOL_GPL(ata_dev_revalidate); EXPORT_SYMBOL_GPL(ata_dev_classify); EXPORT_SYMBOL_GPL(ata_dev_pair); EXPORT_SYMBOL_GPL(ata_port_disable); |