* [PATCH 3/3] pata_cmd64x: remove dead CMD646 rev 1 code
@ 2011-10-11 17:59 Bartlomiej Zolnierkiewicz
2011-10-11 19:58 ` Alan Cox
0 siblings, 1 reply; 4+ messages in thread
From: Bartlomiej Zolnierkiewicz @ 2011-10-11 17:59 UTC (permalink / raw)
To: Jeff Garzik; +Cc: linux-ide, linux-kernel
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] pata_cmd64x: remove dead CMD646 rev 1 code
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ata/pata_cmd64x.c | 33 ++-------------------------------
1 file changed, 2 insertions(+), 31 deletions(-)
Index: b/drivers/ata/pata_cmd64x.c
===================================================================
--- a/drivers/ata/pata_cmd64x.c
+++ b/drivers/ata/pata_cmd64x.c
@@ -249,18 +249,6 @@ static void cmd648_bmdma_stop(struct ata
pci_write_config_byte(pdev, dma_reg, dma_intr | dma_mask);
}
-/**
- * cmd646r1_dma_stop - DMA stop callback
- * @qc: Command in progress
- *
- * Stub for now while investigating the r1 quirk in the old driver.
- */
-
-static void cmd646r1_bmdma_stop(struct ata_queued_cmd *qc)
-{
- ata_bmdma_stop(qc);
-}
-
static struct scsi_host_template cmd64x_sht = {
ATA_BMDMA_SHT(DRV_NAME),
};
@@ -276,12 +264,6 @@ static struct ata_port_operations cmd64x
.cable_detect = ata_cable_40wire,
};
-static struct ata_port_operations cmd646r1_port_ops = {
- .inherits = &cmd64x_base_ops,
- .bmdma_stop = cmd646r1_bmdma_stop,
- .cable_detect = ata_cable_40wire,
-};
-
static struct ata_port_operations cmd648_port_ops = {
.inherits = &cmd64x_base_ops,
.bmdma_stop = cmd648_bmdma_stop,
@@ -326,12 +308,6 @@ static int cmd64x_init_one(struct pci_de
.udma_mask = ATA_UDMA2,
.port_ops = &cmd64x_port_ops
},
- { /* CMD 646 rev 1 */
- .flags = ATA_FLAG_SLAVE_POSS,
- .pio_mask = ATA_PIO4,
- .mwdma_mask = ATA_MWDMA2,
- .port_ops = &cmd646r1_port_ops
- },
{ /* CMD 648 */
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = ATA_PIO4,
@@ -374,11 +350,6 @@ static int cmd64x_init_one(struct pci_de
ppi[0] = &cmd_info[2];
ppi[1] = &cmd_info[2];
}
- /* Early rev with other problems ? */
- else if (pdev->revision == 1) {
- ppi[0] = &cmd_info[3];
- ppi[1] = &cmd_info[3];
- }
/* revs 1,2 have no CNTRL_CH0 */
if (pdev->revision < 3)
cntrl_ch0_ok = 0;
@@ -423,8 +394,8 @@ static int cmd64x_reinit_one(struct pci_
static const struct pci_device_id cmd64x[] = {
{ PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_643), 0 },
{ PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_646), 1 },
- { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_648), 4 },
- { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_649), 5 },
+ { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_648), 3 },
+ { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_649), 4 },
{ },
};
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 3/3] pata_cmd64x: remove dead CMD646 rev 1 code
2011-10-11 17:59 [PATCH 3/3] pata_cmd64x: remove dead CMD646 rev 1 code Bartlomiej Zolnierkiewicz
@ 2011-10-11 19:58 ` Alan Cox
2011-10-12 15:22 ` Bartlomiej Zolnierkiewicz
0 siblings, 1 reply; 4+ messages in thread
From: Alan Cox @ 2011-10-11 19:58 UTC (permalink / raw)
To: Bartlomiej Zolnierkiewicz; +Cc: Jeff Garzik, linux-ide, linux-kernel
On Tue, 11 Oct 2011 19:59:03 +0200
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> wrote:
> From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> Subject: [PATCH] pata_cmd64x: remove dead CMD646 rev 1 code
>
> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
You forgot to document why it is dead and why it should be removed
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 3/3] pata_cmd64x: remove dead CMD646 rev 1 code
2011-10-11 19:58 ` Alan Cox
@ 2011-10-12 15:22 ` Bartlomiej Zolnierkiewicz
2011-10-12 17:55 ` Alan Cox
0 siblings, 1 reply; 4+ messages in thread
From: Bartlomiej Zolnierkiewicz @ 2011-10-12 15:22 UTC (permalink / raw)
To: Alan Cox; +Cc: Jeff Garzik, linux-ide, linux-kernel
Alan Cox wrote:
> On Tue, 11 Oct 2011 19:59:03 +0200
> Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> wrote:
>
> > From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> > Subject: [PATCH] pata_cmd64x: remove dead CMD646 rev 1 code
> >
> > Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
>
> You forgot to document why it is dead and why it should be removed
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH v2] pata_cmd64x: remove dead CMD646 rev 1 code
cmd646r1_bmdma_stop() just calls the standard ata_bmdma_stop()
helper and it has been the case since the driver introduction
by commit 669a5db ("[libata] Add a bunch of PATA drivers.") in
Aug 2006.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
v2: updated patch description
drivers/ata/pata_cmd64x.c | 33 ++-------------------------------
1 file changed, 2 insertions(+), 31 deletions(-)
Index: b/drivers/ata/pata_cmd64x.c
===================================================================
--- a/drivers/ata/pata_cmd64x.c
+++ b/drivers/ata/pata_cmd64x.c
@@ -249,18 +249,6 @@ static void cmd648_bmdma_stop(struct ata
pci_write_config_byte(pdev, dma_reg, dma_intr | dma_mask);
}
-/**
- * cmd646r1_dma_stop - DMA stop callback
- * @qc: Command in progress
- *
- * Stub for now while investigating the r1 quirk in the old driver.
- */
-
-static void cmd646r1_bmdma_stop(struct ata_queued_cmd *qc)
-{
- ata_bmdma_stop(qc);
-}
-
static struct scsi_host_template cmd64x_sht = {
ATA_BMDMA_SHT(DRV_NAME),
};
@@ -276,12 +264,6 @@ static struct ata_port_operations cmd64x
.cable_detect = ata_cable_40wire,
};
-static struct ata_port_operations cmd646r1_port_ops = {
- .inherits = &cmd64x_base_ops,
- .bmdma_stop = cmd646r1_bmdma_stop,
- .cable_detect = ata_cable_40wire,
-};
-
static struct ata_port_operations cmd648_port_ops = {
.inherits = &cmd64x_base_ops,
.bmdma_stop = cmd648_bmdma_stop,
@@ -326,12 +308,6 @@ static int cmd64x_init_one(struct pci_de
.udma_mask = ATA_UDMA2,
.port_ops = &cmd64x_port_ops
},
- { /* CMD 646 rev 1 */
- .flags = ATA_FLAG_SLAVE_POSS,
- .pio_mask = ATA_PIO4,
- .mwdma_mask = ATA_MWDMA2,
- .port_ops = &cmd646r1_port_ops
- },
{ /* CMD 648 */
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = ATA_PIO4,
@@ -374,11 +350,6 @@ static int cmd64x_init_one(struct pci_de
ppi[0] = &cmd_info[2];
ppi[1] = &cmd_info[2];
}
- /* Early rev with other problems ? */
- else if (pdev->revision == 1) {
- ppi[0] = &cmd_info[3];
- ppi[1] = &cmd_info[3];
- }
/* revs 1,2 have no CNTRL_CH0 */
if (pdev->revision < 3)
cntrl_ch0_ok = 0;
@@ -423,8 +394,8 @@ static int cmd64x_reinit_one(struct pci_
static const struct pci_device_id cmd64x[] = {
{ PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_643), 0 },
{ PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_646), 1 },
- { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_648), 4 },
- { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_649), 5 },
+ { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_648), 3 },
+ { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_649), 4 },
{ },
};
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 3/3] pata_cmd64x: remove dead CMD646 rev 1 code
2011-10-12 15:22 ` Bartlomiej Zolnierkiewicz
@ 2011-10-12 17:55 ` Alan Cox
0 siblings, 0 replies; 4+ messages in thread
From: Alan Cox @ 2011-10-12 17:55 UTC (permalink / raw)
To: Bartlomiej Zolnierkiewicz; +Cc: Jeff Garzik, linux-ide, linux-kernel
> cmd646r1_bmdma_stop() just calls the standard ata_bmdma_stop()
> helper and it has been the case since the driver introduction
> by commit 669a5db ("[libata] Add a bunch of PATA drivers.") in
> Aug 2006.
The question that was asked before I seem to remember was whehter it
should be using its own helper. As libata reads the status first it
shouldn't so this seems ok
But this should all be documented in the changelog or god knows how
someone will figure it out in 18 months time if they end up bisecting to
it.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2011-10-11 17:59 [PATCH 3/3] pata_cmd64x: remove dead CMD646 rev 1 code Bartlomiej Zolnierkiewicz
2011-10-11 19:58 ` Alan Cox
2011-10-12 15:22 ` Bartlomiej Zolnierkiewicz
2011-10-12 17:55 ` Alan Cox
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