netdev - Re: [PATCH iwl-net v3 1/2] ice: Fix entering Safe Mode

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Message-ID: <ede73dc3-fac0-4152-8b2e-27cd1b1666b0@amd.com>
Date: Tue, 24 Sep 2024 11:49:17 -0700
From: Brett Creeley <bcreeley@....com>
To: Marcin Szycik <marcin.szycik@...ux.intel.com>,
 intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org, mateusz.polchlopek@...el.com,
 maciej.fijalkowski@...el.com, Przemek Kitszel <przemyslaw.kitszel@...el.com>
Subject: Re: [PATCH iwl-net v3 1/2] ice: Fix entering Safe Mode

On 9/24/2024 3:04 AM, Marcin Szycik wrote:
> Caution: This message originated from an External Source. Use proper caution when opening attachments, clicking links, or responding.
> 
> 
> If DDP package is missing or corrupted, the driver should enter Safe Mode.
> Instead, an error is returned and probe fails.
> 
> To fix this, don't exit init if ice_init_ddp_config() returns an error.
> 
> Repro:
> * Remove or rename DDP package (/lib/firmware/intel/ice/ddp/ice.pkg)
> * Load ice
> 
> Fixes: cc5776fe1832 ("ice: Enable switching default Tx scheduler topology")
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
> Signed-off-by: Marcin Szycik <marcin.szycik@...ux.intel.com>
> ---
> v3: Change ice_init_ddp_config() type to int, check return (Brett)
> v2: Change ice_init_ddp_config() type to void (Maciej)
> ---
>   drivers/net/ethernet/intel/ice/ice_main.c | 4 +---
>   1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
> index 0f5c9d347806..7a84d3c4c305 100644
> --- a/drivers/net/ethernet/intel/ice/ice_main.c
> +++ b/drivers/net/ethernet/intel/ice/ice_main.c
> @@ -4749,14 +4749,12 @@ int ice_init_dev(struct ice_pf *pf)
>          ice_init_feature_support(pf);
> 
>          err = ice_init_ddp_config(hw, pf);
> -       if (err)
> -               return err;
> 
>          /* if ice_init_ddp_config fails, ICE_FLAG_ADV_FEATURES bit won't be
>           * set in pf->state, which will cause ice_is_safe_mode to return
>           * true
>           */
> -       if (ice_is_safe_mode(pf)) {
> +       if (err || ice_is_safe_mode(pf)) {

LGTM.

Reviewed-by: Brett Creeley <brett.creeley@....com>

>                  /* we already got function/device capabilities but these don't
>                   * reflect what the driver needs to do in safe mode. Instead of
>                   * adding conditional logic everywhere to ignore these
> --
> 2.45.0
>