linux-kernel - Re: [PATCH 4/5] pata: Update experimental tags

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 19 Nov 2009 16:49:12 -0500
From:	Jeff Garzik <jgarzik@...ox.com>
To:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
CC:	Sergei Shtylyov <sshtylyov@...mvista.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Alan Cox <alan@...ux.intel.com>, linux-kernel@...r.kernel.org,
	linux-ide@...r.kernel.org
Subject: Re: [PATCH 4/5] pata: Update experimental tags

On 11/19/2009 02:31 PM, Bartlomiej Zolnierkiewicz wrote:
> Subject: [PATCH] pata_hpt{37x,3x2n}: add debounce delay to cable detection methods
>
> Alan Cox reported that cable detection sometimes works unreliably
> for HPT3xxN and that the issue is fixed by adding debounce delay
> as used by the vendor driver.
>
> Sergei Shtylyov also noticed that debounce delay is needed for all
> HPT37x and HPT3xxN chipsets according to vendor drivers.
>
> Signed-off-by: Bartlomiej Zolnierkiewicz<bzolnier@...il.com>
> ---
> In comparison to original patch the conversion from PCI access to
> io has been dropped as it is not required for the bugfix and makes
> patch easier for back-porting into -stable kernels.
>
>   drivers/ata/pata_hpt37x.c  |    3 +++
>   drivers/ata/pata_hpt3x2n.c |    3 +++
>   2 files changed, 6 insertions(+)
>
> Index: b/drivers/ata/pata_hpt37x.c
> ===================================================================
> --- a/drivers/ata/pata_hpt37x.c
> +++ b/drivers/ata/pata_hpt37x.c
> @@ -324,6 +324,9 @@ static int hpt37x_pre_reset(struct ata_l
>
>   	pci_read_config_byte(pdev, 0x5B,&scr2);
>   	pci_write_config_byte(pdev, 0x5B, scr2&  ~0x01);
> +
> +	udelay(10); /* debounce */
> +
>   	/* Cable register now active */
>   	pci_read_config_byte(pdev, 0x5A,&ata66);
>   	/* Restore state */
> Index: b/drivers/ata/pata_hpt3x2n.c
> ===================================================================
> --- a/drivers/ata/pata_hpt3x2n.c
> +++ b/drivers/ata/pata_hpt3x2n.c
> @@ -128,6 +128,9 @@ static int hpt3x2n_cable_detect(struct a
>
>   	pci_read_config_byte(pdev, 0x5B,&scr2);
>   	pci_write_config_byte(pdev, 0x5B, scr2&  ~0x01);
> +
> +	udelay(10); /* debounce */
> +
>   	/* Cable register now active */
>   	pci_read_config_byte(pdev, 0x5A,&ata66);
>   	/* Restore state */


applied -- same comment as last email, regarding hpt3x2n_cable_detect() fix

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/