Re: APPLE SSD SM0256G: host bus errors above 1280 KiB writes since 9b8b84879d4a

Niklas Cassel <[email protected]> Mon, 3 Aug 2026 13:32:01 +0200

Newsgroups	org.kernel.vger.linux-ide,org.kernel.vger.linux-block
Message-ID	<anB8MRnp0BXwQmu2@ryzen>

Hello Ric,

On Fri, Jul 31, 2026 at 09:10:53PM +0000, Ric Lewis wrote:
> ## Patch
> 
>     --- a/drivers/ata/libata-core.c
>     +++ b/drivers/ata/libata-core.c
>     @@ static const struct ata_dev_quirk_value __ata_dev_max_sec_quirks[] = {
>       { "INTEL SSDSC2KG480G8",      "XCV10120", 8191 },
>     + { "APPLE SSD SM0256G",        "BXW1SA0Q", 2560 },
>       { },
>      };
> 
>     @@ static const struct ata_dev_quirks_entry __ata_dev_quirks[] = {
>       { "DELLBOSS VD",  "MV.R00-0", ATA_QUIRK_MAX_SEC },
> 
>     + /*
>     +  * Apple/Samsung S4LN058A01[SSUBX] AHCI SSD reports host bus errors on
>     +  * writes larger than 1280 KiB since commit 9b8b84879d4a.
>     +  */
>     + { "APPLE SSD SM0256G",  "BXW1SA0Q", ATA_QUIRK_MAX_SEC },
> 
>     Fixes: 9b8b84879d4a ("block: Increase BLK_DEF_MAX_SECTORS_CAP")
>     Cc: [email protected]

Patch looks good to, could you please send it as a formal patch?

https://docs.kernel.org/process/submitting-patches.html


Kind regards,
Niklas