+ Jiri

On Wed, Feb 05, 2025 at 11:42:12AM +0100, Przemek Kitszel wrote:
> GCC 7 is not as good as GCC 8+ in telling what is a compile-time const,
> and thus could be used for static storage. So we could not use variables
> for that, no matter how much "const" keyword is sprinkled around.
> 
> Excerpt from the report:
> My GCC is: gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0.
> 
>   CC [M]  drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.o
> drivers/net/ethernet/intel/ice/devlink/health.c:35:3: error: initializer 
> element is not constant
>    ice_common_port_solutions, {ice_port_number_label}},
>    ^~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/net/ethernet/intel/ice/devlink/health.c:35:3: note: (near 
> initialization for 'ice_health_status_lookup[0].solution')
> drivers/net/ethernet/intel/ice/devlink/health.c:35:31: error: initializer 
> element is not constant
>    ice_common_port_solutions, {ice_port_number_label}},
>                                ^~~~~~~~~~~~~~~~~~~~~
> drivers/net/ethernet/intel/ice/devlink/health.c:35:31: note: (near 
> initialization for 'ice_health_status_lookup[0].data_label[0]')
> drivers/net/ethernet/intel/ice/devlink/health.c:37:46: error: initializer 
> element is not constant
>    "Change or replace the module or cable.", {ice_port_number_label}},
>                                               ^~~~~~~~~~~~~~~~~~~~~
> drivers/net/ethernet/intel/ice/devlink/health.c:37:46: note: (near 
> initialization for 'ice_health_status_lookup[1].data_label[0]')
> drivers/net/ethernet/intel/ice/devlink/health.c:39:3: error: initializer 
> element is not constant
>    ice_common_port_solutions, {ice_port_number_label}},
>    ^~~~~~~~~~~~~~~~~~~~~~~~~
> 
> Fixes: 85d6164ec56d ("ice: add fw and port health reporters")
> Reported-by: Qiuxu Zhuo <qiuxu.z...@intel.com>
> Closes: 
> https://lore.kernel.org/netdev/cy8pr11mb7134bf7a46d71e50d25fa7a989...@cy8pr11mb7134.namprd11.prod.outlook.com
> Signed-off-by: Przemek Kitszel <przemyslaw.kits...@intel.com>
> ---
> I would really like to bump min gcc to 8.5 (RH 8 family),
> instead of supporting old Ubuntu. However SLES 15 is also stuck with gcc 7.5 
> :(
> 
> CC: Linus Torvalds <torva...@linux-foundation.org>
> CC: Kees Cook <k...@kernel.org>
> CC: Nick Desaulniers <nick.desaulni...@gmail.com>

Hi Prezemek,

I ran into a similar problem not so long ago and I'm wondering if
the following, based on a suggestion by Jiri Slaby, resolves your
problem.

diff --git a/drivers/net/ethernet/intel/ice/devlink/health.c 
b/drivers/net/ethernet/intel/ice/devlink/health.c
index ea40f7941259..19c3d37aa768 100644
--- a/drivers/net/ethernet/intel/ice/devlink/health.c
+++ b/drivers/net/ethernet/intel/ice/devlink/health.c
@@ -25,10 +25,10 @@ struct ice_health_status {
  * The below lookup requires to be sorted by code.
  */
 
-static const char *const ice_common_port_solutions =
+static const char ice_common_port_solutions[] =
        "Check your cable connection. Change or replace the module or cable. 
Manually set speed and duplex.";
-static const char *const ice_port_number_label = "Port Number";
-static const char *const ice_update_nvm_solution = "Update to the latest NVM 
image.";
+static const char ice_port_number_label[] = "Port Number";
+static const char ice_update_nvm_solution[] = "Update to the latest NVM 
image.";
 
 static const struct ice_health_status ice_health_status_lookup[] = {
        {ICE_AQC_HEALTH_STATUS_ERR_UNKNOWN_MOD_STRICT, "An unsupported module 
was detected.",


Link: 
https://lore.kernel.org/netdev/485dbc5a-a04b-40c2-9481-955eaa5ce...@kernel.org/
Link: https://git.kernel.org/netdev/net-next/c/36fb51479e3c

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