Hello Paolo,
On Tue, Jun 04, 2024 at 06:22:17PM +0200, Paolo Pisati wrote:
> pata_buddha_data_xfer(), pata_gayle_data_xfer() and ata_sff_data_xfer() are the
> same function, consolidate around libata::ata_sff_data_xfer().
Please avoid the C++ namespace operator,
just drop "libata::" here and in the subject.
Also please just split this into two patches, one per driver.
>
> Signed-off-by: Paolo Pisati <p.pisati@xxxxxxxxx>
> ---
> drivers/ata/pata_buddha.c | 40 ++-------------------------------------
> drivers/ata/pata_gayle.c | 40 ++-------------------------------------
> 2 files changed, 4 insertions(+), 76 deletions(-)
>
> diff --git a/drivers/ata/pata_buddha.c b/drivers/ata/pata_buddha.c
> index c36ee991d5e5..234278eb26e1 100644
> --- a/drivers/ata/pata_buddha.c
> +++ b/drivers/ata/pata_buddha.c
> @@ -60,42 +60,6 @@ static const struct scsi_host_template pata_buddha_sht = {
> ATA_PIO_SHT(DRV_NAME),
> };
>
> -/* FIXME: is this needed? */
> -static unsigned int pata_buddha_data_xfer(struct ata_queued_cmd *qc,
> - unsigned char *buf,
> - unsigned int buflen, int rw)
> -{
> - struct ata_device *dev = qc->dev;
> - struct ata_port *ap = dev->link->ap;
> - void __iomem *data_addr = ap->ioaddr.data_addr;
> - unsigned int words = buflen >> 1;
> -
> - /* Transfer multiple of 2 bytes */
> - if (rw == READ)
> - raw_insw((u16 *)data_addr, (u16 *)buf, words);
> - else
> - raw_outsw((u16 *)data_addr, (u16 *)buf, words);
> -
> - /* Transfer trailing byte, if any. */
> - if (unlikely(buflen & 0x01)) {
> - unsigned char pad[2] = { };
> -
> - /* Point buf to the tail of buffer */
> - buf += buflen - 1;
> -
> - if (rw == READ) {
> - raw_insw((u16 *)data_addr, (u16 *)pad, 1);
> - *buf = pad[0];
> - } else {
> - pad[0] = *buf;
> - raw_outsw((u16 *)data_addr, (u16 *)pad, 1);
> - }
> - words++;
> - }
> -
> - return words << 1;
> -}
> -
> /*
> * Provide our own set_mode() as we don't want to change anything that has
> * already been configured..
> @@ -131,7 +95,7 @@ static void pata_xsurf_irq_clear(struct ata_port *ap)
>
> static struct ata_port_operations pata_buddha_ops = {
> .inherits = &ata_sff_port_ops,
> - .sff_data_xfer = pata_buddha_data_xfer,
> + .sff_data_xfer = ata_sff_data_xfer,
Since this driver inherits ata_sff_port_ops,
which sets .sff_data_xfer to ata_sff_data_xfer:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/ata/libata-sff.c?h=v6.10-rc2#n46
this line should not be needed.
> .sff_irq_check = pata_buddha_irq_check,
> .cable_detect = ata_cable_unknown,
> .set_mode = pata_buddha_set_mode,
> @@ -139,7 +103,7 @@ static struct ata_port_operations pata_buddha_ops = {
>
> static struct ata_port_operations pata_xsurf_ops = {
> .inherits = &ata_sff_port_ops,
> - .sff_data_xfer = pata_buddha_data_xfer,
> + .sff_data_xfer = ata_sff_data_xfer,
> .sff_irq_check = pata_buddha_irq_check,
> .sff_irq_clear = pata_xsurf_irq_clear,
> .cable_detect = ata_cable_unknown,
> diff --git a/drivers/ata/pata_gayle.c b/drivers/ata/pata_gayle.c
> index 3bdbe2b65a2b..febffc36a18f 100644
> --- a/drivers/ata/pata_gayle.c
> +++ b/drivers/ata/pata_gayle.c
> @@ -38,42 +38,6 @@ static const struct scsi_host_template pata_gayle_sht = {
> ATA_PIO_SHT(DRV_NAME),
> };
>
> -/* FIXME: is this needed? */
> -static unsigned int pata_gayle_data_xfer(struct ata_queued_cmd *qc,
> - unsigned char *buf,
> - unsigned int buflen, int rw)
> -{
> - struct ata_device *dev = qc->dev;
> - struct ata_port *ap = dev->link->ap;
> - void __iomem *data_addr = ap->ioaddr.data_addr;
> - unsigned int words = buflen >> 1;
> -
> - /* Transfer multiple of 2 bytes */
> - if (rw == READ)
> - raw_insw((u16 *)data_addr, (u16 *)buf, words);
> - else
> - raw_outsw((u16 *)data_addr, (u16 *)buf, words);
> -
> - /* Transfer trailing byte, if any. */
> - if (unlikely(buflen & 0x01)) {
> - unsigned char pad[2] = { };
> -
> - /* Point buf to the tail of buffer */
> - buf += buflen - 1;
> -
> - if (rw == READ) {
> - raw_insw((u16 *)data_addr, (u16 *)pad, 1);
> - *buf = pad[0];
> - } else {
> - pad[0] = *buf;
> - raw_outsw((u16 *)data_addr, (u16 *)pad, 1);
> - }
> - words++;
> - }
> -
> - return words << 1;
> -}
> -
> /*
> * Provide our own set_mode() as we don't want to change anything that has
> * already been configured..
> @@ -110,7 +74,7 @@ static void pata_gayle_irq_clear(struct ata_port *ap)
>
> static struct ata_port_operations pata_gayle_a1200_ops = {
> .inherits = &ata_sff_port_ops,
> - .sff_data_xfer = pata_gayle_data_xfer,
> + .sff_data_xfer = ata_sff_data_xfer,
Same comment as for the other driver.
Kind regards,
Niklas
