From: Johannes Berg johannes.berg@intel.com
commit fdfde0cb79264f88992e72b5a056a3a3284fcaad upstream.
Contrary to what was stated before, the hardware hasn't changed the bits here yet. In any case, the new CSR is also directly (lower 16 bits) connected to UREG_DOORBELL_TO_ISR6, so if it still changes the changes would be there. Adjust the code and comments accordingly.
Signed-off-by: Johannes Berg johannes.berg@intel.com Fixes: 6c0795f1a524 ("iwlwifi: implement Bz NMI behaviour") Signed-off-by: Luca Coelho luciano.coelho@intel.com Link: https://lore.kernel.org/r/iwlwifi.20211210090244.75b6207536e3.I7d170a48a9096... Signed-off-by: Luca Coelho luciano.coelho@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/wireless/intel/iwlwifi/iwl-csr.h | 5 +++-- drivers/net/wireless/intel/iwlwifi/iwl-io.c | 2 +- 2 files changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/net/wireless/intel/iwlwifi/iwl-csr.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-csr.h @@ -104,9 +104,10 @@ /* GIO Chicken Bits (PCI Express bus link power management) */ #define CSR_GIO_CHICKEN_BITS (CSR_BASE+0x100)
-/* Doorbell NMI (since Bz) */ +/* Doorbell - since Bz + * connected to UREG_DOORBELL_TO_ISR6 (lower 16 bits only) + */ #define CSR_DOORBELL_VECTOR (CSR_BASE + 0x130) -#define CSR_DOORBELL_VECTOR_NMI BIT(1)
/* host chicken bits */ #define CSR_HOST_CHICKEN (CSR_BASE + 0x204) --- a/drivers/net/wireless/intel/iwlwifi/iwl-io.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-io.c @@ -218,7 +218,7 @@ void iwl_force_nmi(struct iwl_trans *tra UREG_DOORBELL_TO_ISR6_NMI_BIT); else iwl_write32(trans, CSR_DOORBELL_VECTOR, - CSR_DOORBELL_VECTOR_NMI); + UREG_DOORBELL_TO_ISR6_NMI_BIT); } IWL_EXPORT_SYMBOL(iwl_force_nmi);