Re: [PATCH] ata: libata-core: Add NOLPM quirk for PNY CS900 1TB SSD

[Niklas Cassel]

On Fri, Jun 19, 2026 at 09:54:02PM -0500, Bryam Vargas via B4 Relay wrote:
> From: Bryam Vargas <hexlabsecurity@xxxxxxxxx>
> 
> The PNY CS900 1TB SSD (Phison PS3111-S11, DRAM-less) drops off the bus
> after entering Device-Initiated Slumber during idle. With the default
> med_power_with_dipm policy the link goes down (SStatus 1 SControl 300)
> and does not recover, forcing the filesystem read-only. Forcing
> max_performance keeps the link stable across prolonged idle.
> 
> Add a NOLPM quirk so link power management is disabled for this drive
> specifically, leaving it intact for other devices on the host.
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Bryam Vargas <hexlabsecurity@xxxxxxxxx>
> ---

Reviewed-by: Niklas Cassel <cassel@xxxxxxxxxx>