commit: 5416912af75de9cba5d1c75b99a7888b0bbbd2fb From: Aaron Lu <[email protected]> Date: Mon, 3 Dec 2012 11:35:02 +0800 Subject: libata: set dma_mode to 0xff in reset
ata_device->dma_mode's initial value is zero, which is not a valid dma mode, but ata_dma_enabled will return true for this value. This patch sets dma_mode to 0xff in reset function, so that ata_dma_enabled will not return true for this case, or it will cause problem for pata_acpi. The corrsponding bugzilla page is at: https://bugzilla.kernel.org/show_bug.cgi?id=49151 Reported-by: Phillip Wood <[email protected]> Signed-off-by: Aaron Lu <[email protected]> Tested-by: Szymon Janc <[email protected]> Tested-by: Dutra Julio <[email protected]> Acked-by: Alan Cox <[email protected]> Cc: <[email protected]> Signed-off-by: Jeff Garzik <[email protected]> --- drivers/ata/libata-core.c | 1 + drivers/ata/libata-eh.c | 1 + 2 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index caffe73..583f26d 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2559,6 +2559,7 @@ int ata_bus_probe(struct ata_port *ap) * bus as we may be talking too fast. */ dev->pio_mode = XFER_PIO_0; + dev->dma_mode = 0xff; /* If the controller has a pio mode setup function * then use it to set the chipset to rights. Don't diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index e60437c..bf039b0 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2657,6 +2657,7 @@ int ata_eh_reset(struct ata_link *link, int classify, * bus as we may be talking too fast. */ dev->pio_mode = XFER_PIO_0; + dev->dma_mode = 0xff; /* If the controller has a pio mode setup function * then use it to set the chipset to rights. Don't -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
