octeontx2-af: Fix LMAC config in cgx_lmac_rx_tx_enable

PF netdev can request AF to enable or disable reception and transmission
on assigned CGX::LMAC. The current code instead of disabling or enabling
'reception and transmission' also disables/enable the LMAC. This patch
fixes this issue.

Fixes: 1435f66a ("octeontx2-af: CGX Rx/Tx enable/disable mbox handlers")
Signed-off-by: Angela Czubak <aczubak@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/20230105160107.17638-1-hkelam@marvell.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/marvell/octeontx2/af/cgx.c

@@ -774,9 +774,9 @@ int cgx_lmac_rx_tx_enable(void *cgxd, int lmac_id, bool enable)
 
 	cfg = cgx_read(cgx, lmac_id, CGXX_CMRX_CFG);
 	if (enable)
-		cfg |= CMR_EN | DATA_PKT_RX_EN | DATA_PKT_TX_EN;
+		cfg |= DATA_PKT_RX_EN | DATA_PKT_TX_EN;
 	else
-		cfg &= ~(CMR_EN | DATA_PKT_RX_EN | DATA_PKT_TX_EN);
+		cfg &= ~(DATA_PKT_RX_EN | DATA_PKT_TX_EN);
 	cgx_write(cgx, lmac_id, CGXX_CMRX_CFG, cfg);
 	return 0;
 }

drivers/net/ethernet/marvell/octeontx2/af/cgx.h

@@ -26,7 +26,6 @@
 #define CMR_P2X_SEL_SHIFT		59ULL
 #define CMR_P2X_SEL_NIX0		1ULL
 #define CMR_P2X_SEL_NIX1		2ULL
-#define CMR_EN				BIT_ULL(55)
 #define DATA_PKT_TX_EN			BIT_ULL(53)
 #define DATA_PKT_RX_EN			BIT_ULL(54)
 #define CGX_LMAC_TYPE_SHIFT		40