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Date: Sun, 15 Feb 2009 22:21:42 +0100
From: "Rafael J. Wysocki" <rjw@...k.pl>
To: Justin Madru <jdm64@...ab.com>, Ingo Molnar <mingo@...e.hu>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Kernel Testers List <kernel-testers@...r.kernel.org>,
Linux IDE <linux-ide@...r.kernel.org>,
Alan Cox <alan@...rguk.ukuu.org.uk>,
Hugh Dickins <hugh@...itas.com>,
Larry Finger <Larry.Finger@...inger.net>,
Mikael Pettersson <mikpe@...uu.se>,
Sergei Shtylyov <sshtylyov@...mvista.com>
Subject: Re: [Bug #12263] Sata soft reset filling log
On Sunday 15 February 2009, Justin Madru wrote:
> Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.27 and 2.6.28.
> >
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.27 and 2.6.28. Please verify if it still should
> > be listed and let me know (either way).
> >
> >
> > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12263
> > Subject : Sata soft reset filling log
> > Submitter : Justin Madru <bevicm@...extreme.com>
> > Date : 2008-12-13 2:07 (64 days old)
> > References : http://marc.info/?l=linux-kernel&m=122913412608533&w=4
>
> I'm still seeing this on .29-rc5, and I think that my bug #12263 is a
> duplicate of bug #12609,
> or more correctly it's a duplicate of mine because I reported first.
>
> It seems like the bug has been fixed in tip/master for some time now.
> Below is the diff of origin and tip from when I tested.
Ingo, do you know whinch patch in -tip fixes this regression?
> $ git diff origin/master..tip/master drivers/ata/
>
> diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
> index 54961c0..e004c25 100644
> --- a/drivers/ata/ata_piix.c
> +++ b/drivers/ata/ata_piix.c
> @@ -310,7 +310,7 @@ static struct scsi_host_template piix_sht = {
> };
>
> static struct ata_port_operations piix_pata_ops = {
> - .inherits = &ata_bmdma32_port_ops,
> + .inherits = &ata_bmdma_port_ops,
> .cable_detect = ata_cable_40wire,
> .set_piomode = piix_set_piomode,
> .set_dmamode = piix_set_dmamode,
> diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
> index 9fbf059..1ed3966 100644
> --- a/drivers/ata/libata-core.c
> +++ b/drivers/ata/libata-core.c
> @@ -1482,7 +1482,7 @@ static int ata_hpa_resize(struct ata_device *dev)
> struct ata_eh_context *ehc = &dev->link->eh_context;
> int print_info = ehc->i.flags & ATA_EHI_PRINTINFO;
> u64 sectors = ata_id_n_sectors(dev->id);
> - u64 native_sectors;
> + u64 uninitialized_var(native_sectors);
> int rc;
>
> /* do we need to do it? */
> diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
> index b9747fa..d65b9b2 100644
> --- a/drivers/ata/libata-scsi.c
> +++ b/drivers/ata/libata-scsi.c
> @@ -3247,7 +3247,7 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync)
> int tries = 5;
> struct ata_device *last_failed_dev = NULL;
> struct ata_link *link;
> - struct ata_device *dev;
> + struct ata_device *uninitialized_var(dev);
>
> if (ap->flags & ATA_FLAG_DISABLED)
> return;
> diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
> index 0b299b0..416e3e2 100644
> --- a/drivers/ata/libata-sff.c
> +++ b/drivers/ata/libata-sff.c
> @@ -80,13 +80,6 @@ const struct ata_port_operations ata_bmdma_port_ops = {
> };
> EXPORT_SYMBOL_GPL(ata_bmdma_port_ops);
>
> -const struct ata_port_operations ata_bmdma32_port_ops = {
> - .inherits = &ata_bmdma_port_ops,
> -
> - .sff_data_xfer = ata_sff_data_xfer32,
> -};
> -EXPORT_SYMBOL_GPL(ata_bmdma32_port_ops);
> -
> /**
> * ata_fill_sg - Fill PCI IDE PRD table
> * @qc: Metadata associated with taskfile to be transferred
> @@ -743,52 +736,6 @@ unsigned int ata_sff_data_xfer(struct ata_device
> *dev, unsigned char *buf,
> EXPORT_SYMBOL_GPL(ata_sff_data_xfer);
>
> /**
> - * ata_sff_data_xfer32 - Transfer data by PIO
> - * @dev: device to target
> - * @buf: data buffer
> - * @buflen: buffer length
> - * @rw: read/write
> - *
> - * Transfer data from/to the device data register by PIO using 32bit
> - * I/O operations.
> - *
> - * LOCKING:
> - * Inherited from caller.
> - *
> - * RETURNS:
> - * Bytes consumed.
> - */
> -
> -unsigned int ata_sff_data_xfer32(struct ata_device *dev, unsigned char
> *buf,
> - unsigned int buflen, int rw)
> -{
> - struct ata_port *ap = dev->link->ap;
> - void __iomem *data_addr = ap->ioaddr.data_addr;
> - unsigned int words = buflen >> 2;
> - int slop = buflen & 3;
> -
> - /* Transfer multiple of 4 bytes */
> - if (rw == READ)
> - ioread32_rep(data_addr, buf, words);
> - else
> - iowrite32_rep(data_addr, buf, words);
> -
> - if (unlikely(slop)) {
> - __le32 pad;
> - if (rw == READ) {
> - pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr));
> - memcpy(buf + buflen - slop, &pad, slop);
> - } else {
> - memcpy(&pad, buf + buflen - slop, slop);
> - iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
> - }
> - words++;
> - }
> - return words << 2;
> -}
> -EXPORT_SYMBOL_GPL(ata_sff_data_xfer32);
> -
> -/**
> * ata_sff_data_xfer_noirq - Transfer data by PIO
> * @dev: device to target
> * @buf: data buffer
> diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c
> index eb99dbe..7cd48ea 100644
> --- a/drivers/ata/pata_ali.c
> +++ b/drivers/ata/pata_ali.c
> @@ -151,7 +151,8 @@ static void ali_fifo_control(struct ata_port *ap,
> struct ata_device *adev, int o
>
> pci_read_config_byte(pdev, pio_fifo, &fifo);
> fifo &= ~(0x0F << shift);
> - fifo |= (on << shift);
> + if (on)
> + fifo |= (on << shift);
> pci_write_config_byte(pdev, pio_fifo, fifo);
> }
>
> @@ -369,11 +370,10 @@ static struct ata_port_operations
> ali_early_port_ops = {
> .inherits = &ata_sff_port_ops,
> .cable_detect = ata_cable_40wire,
> .set_piomode = ali_set_piomode,
> - .sff_data_xfer = ata_sff_data_xfer32,
> };
>
> static const struct ata_port_operations ali_dma_base_ops = {
> - .inherits = &ata_bmdma32_port_ops,
> + .inherits = &ata_bmdma_port_ops,
> .set_piomode = ali_set_piomode,
> .set_dmamode = ali_set_dmamode,
> };
> diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c
> index 63719ab..0ec9c7d 100644
> --- a/drivers/ata/pata_amd.c
> +++ b/drivers/ata/pata_amd.c
> @@ -24,7 +24,7 @@
> #include <linux/libata.h>
>
> #define DRV_NAME "pata_amd"
> -#define DRV_VERSION "0.3.11"
> +#define DRV_VERSION "0.3.10"
>
> /**
> * timing_setup - shared timing computation and load
> @@ -345,7 +345,7 @@ static struct scsi_host_template amd_sht = {
> };
>
> static const struct ata_port_operations amd_base_port_ops = {
> - .inherits = &ata_bmdma32_port_ops,
> + .inherits = &ata_bmdma_port_ops,
> .prereset = amd_pre_reset,
> };
>
> diff --git a/drivers/ata/pata_atiixp.c b/drivers/ata/pata_atiixp.c
> index 506adde..115eb00 100644
> --- a/drivers/ata/pata_atiixp.c
> +++ b/drivers/ata/pata_atiixp.c
> @@ -140,7 +140,7 @@ static void atiixp_set_dmamode(struct ata_port *ap,
> struct ata_device *adev)
> wanted_pio = 3;
> else if (adev->dma_mode == XFER_MW_DMA_0)
> wanted_pio = 0;
> - else BUG();
> + else panic("atiixp_set_dmamode: unknown DMA mode!");
>
> if (adev->pio_mode != wanted_pio)
> atiixp_set_pio_timing(ap, adev, wanted_pio);
> diff --git a/drivers/ata/pata_mpiix.c b/drivers/ata/pata_mpiix.c
> index aa576ca..7c8faa4 100644
> --- a/drivers/ata/pata_mpiix.c
> +++ b/drivers/ata/pata_mpiix.c
> @@ -35,7 +35,7 @@
> #include <linux/libata.h>
>
> #define DRV_NAME "pata_mpiix"
> -#define DRV_VERSION "0.7.7"
> +#define DRV_VERSION "0.7.6"
>
> enum {
> IDETIM = 0x6C, /* IDE control register */
> @@ -146,7 +146,6 @@ static struct ata_port_operations mpiix_port_ops = {
> .cable_detect = ata_cable_40wire,
> .set_piomode = mpiix_set_piomode,
> .prereset = mpiix_pre_reset,
> - .sff_data_xfer = ata_sff_data_xfer32,
> };
>
> static int mpiix_init_one(struct pci_dev *dev, const struct
> pci_device_id *id)
> diff --git a/drivers/ata/pata_sil680.c b/drivers/ata/pata_sil680.c
> index 9e764e5..83580a5 100644
> --- a/drivers/ata/pata_sil680.c
> +++ b/drivers/ata/pata_sil680.c
> @@ -32,7 +32,7 @@
> #include <linux/libata.h>
>
> #define DRV_NAME "pata_sil680"
> -#define DRV_VERSION "0.4.9"
> +#define DRV_VERSION "0.4.8"
>
> #define SIL680_MMIO_BAR 5
>
> @@ -195,7 +195,7 @@ static struct scsi_host_template sil680_sht = {
> };
>
> static struct ata_port_operations sil680_port_ops = {
> - .inherits = &ata_bmdma32_port_ops,
> + .inherits = &ata_bmdma_port_ops,
> .cable_detect = sil680_cable_detect,
> .set_piomode = sil680_set_piomode,
> .set_dmamode = sil680_set_dmamode,
> diff --git a/drivers/ata/sata_via.c b/drivers/ata/sata_via.c
> index 5c62da9..f9803a2 100644
> --- a/drivers/ata/sata_via.c
> +++ b/drivers/ata/sata_via.c
> @@ -566,7 +566,7 @@ static int svia_init_one(struct pci_dev *pdev, const
> struct pci_device_id *ent)
> static int printed_version;
> unsigned int i;
> int rc;
> - struct ata_host *host;
> + struct ata_host *uninitialized_var(host);
> int board_id = (int) ent->driver_data;
> const unsigned *bar_sizes;
>
> Justin Madru
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