linux-kernel - [PATCH net] net: systemport: Enable all RX descriptors for SYSTEMPORT Lite

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Date:   Thu,  6 Oct 2022 20:42:01 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     netdev@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH net] net: systemport: Enable all RX descriptors for SYSTEMPORT Lite

The original commit that added support for the SYSTEMPORT Lite variant
halved the number of RX descriptors due to a confusion between the
number of descriptors and the number of descriptor words. There are 512
descriptor *words* which means 256 descriptors total.

Fixes: 44a4524c54af ("net: systemport: Add support for SYSTEMPORT Lite")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 drivers/net/ethernet/broadcom/bcmsysport.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bcmsysport.h b/drivers/net/ethernet/broadcom/bcmsysport.h
index 16b73bb9acc7..5af16e5f9ad0 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.h
+++ b/drivers/net/ethernet/broadcom/bcmsysport.h
@@ -484,7 +484,7 @@ struct bcm_rsb {
 
 /* Number of Receive hardware descriptor words */
 #define SP_NUM_HW_RX_DESC_WORDS		1024
-#define SP_LT_NUM_HW_RX_DESC_WORDS	256
+#define SP_LT_NUM_HW_RX_DESC_WORDS	512
 
 /* Internal linked-list RAM size */
 #define SP_NUM_TX_DESC			1536
-- 
2.25.1