Re: [PATCH] ata: libata-core: Disable READ LOG DMA EXT for Samsung MZ7LH

From: Damien Le Moal
Date: Fri Feb 10 2023 - 22:12:33 EST


On 2/11/23 06:51, Patrick McLean wrote:
> Samsung MZ7LH drives are spewing messages like this in to dmesg with AMD
> SATA controllers:
>
> ata1.00: exception Emask 0x0 SAct 0x7e0000 SErr 0x0 action 0x6 frozen
> ata1.00: failed command: SEND FPDMA QUEUED
> ata1.00: cmd 64/01:88:00:00:00/00:00:00:00:00/a0 tag 17 ncq dma 512 out
> res 40/00:01:01:4f:c2/00:00:00:00:00/00 Emask
> 0x4 (timeout)
>
> Since this was seen previously with SSD 840 EVO drives in
> https://bugzilla.kernel.org/show_bug.cgi?id=203475 let's add the same
> fix for these drives as the EVOs have, since they likely have very
> similar firmwares.
>
> Signed-off-by: Patrick McLean <chutzpah@xxxxxxxxxx>
> ---
> drivers/ata/libata-core.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
> index 2ea572628b1c..c4c89d24f84c 100644
> --- a/drivers/ata/libata-core.c
> +++ b/drivers/ata/libata-core.c
> @@ -4045,6 +4045,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
> { "Samsung SSD 870*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
> ATA_HORKAGE_ZERO_AFTER_TRIM |
> ATA_HORKAGE_NO_NCQ_ON_ATI },
> + { "SAMSUNG*MZ7LH*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |

Are you sure about the upper case here for this drive model name ?

> + ATA_HORKAGE_ZERO_AFTER_TRIM |
> + ATA_HORKAGE_NO_NCQ_ON_ATI, },
> { "FCCT*M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
> ATA_HORKAGE_ZERO_AFTER_TRIM },
>

--
Damien Le Moal
Western Digital Research