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Message-ID: <27ad91b102bf9555e61bb1013672c2bc558e97b9.1699945390.git.baruch@tkos.co.il>
Date: Tue, 14 Nov 2023 09:03:10 +0200
From: Baruch Siach <baruch@...s.co.il>
To: Alexandre Torgue <alexandre.torgue@...s.st.com>,
Jose Abreu <joabreu@...opsys.com>
Cc: netdev@...r.kernel.org,
Baruch Siach <baruch@...s.co.il>
Subject: [PATCH net-next v2 2/2] net: stmmac: reduce dma ring display code duplication
The code to show extended descriptor is identical to normal one.
Consolidate the code to remove duplication.
Signed-off-by: Baruch Siach <baruch@...s.co.il>
---
v2: Fix extended descriptor case, and properly test both cases
---
.../net/ethernet/stmicro/stmmac/stmmac_main.c | 25 +++++++------------
1 file changed, 9 insertions(+), 16 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 39336fe5e89d..cf818a2bc9d5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -6182,26 +6182,19 @@ static void sysfs_display_ring(void *head, int size, int extend_desc,
int i;
struct dma_extended_desc *ep = (struct dma_extended_desc *)head;
struct dma_desc *p = (struct dma_desc *)head;
+ unsigned long desc_size = extend_desc ? sizeof(*ep) : sizeof(*p);
dma_addr_t dma_addr;
for (i = 0; i < size; i++) {
- if (extend_desc) {
- dma_addr = dma_phy_addr + i * sizeof(*ep);
- seq_printf(seq, "%d [%pad]: 0x%x 0x%x 0x%x 0x%x\n",
- i, &dma_addr,
- le32_to_cpu(ep->basic.des0),
- le32_to_cpu(ep->basic.des1),
- le32_to_cpu(ep->basic.des2),
- le32_to_cpu(ep->basic.des3));
- ep++;
- } else {
- dma_addr = dma_phy_addr + i * sizeof(*p);
- seq_printf(seq, "%d [%pad]: 0x%x 0x%x 0x%x 0x%x\n",
- i, &dma_addr,
- le32_to_cpu(p->des0), le32_to_cpu(p->des1),
- le32_to_cpu(p->des2), le32_to_cpu(p->des3));
+ dma_addr = dma_phy_addr + i * desc_size;
+ seq_printf(seq, "%d [%pad]: 0x%x 0x%x 0x%x 0x%x\n",
+ i, &dma_addr,
+ le32_to_cpu(p->des0), le32_to_cpu(p->des1),
+ le32_to_cpu(p->des2), le32_to_cpu(p->des3));
+ if (extend_desc)
+ p = &(++ep)->basic;
+ else
p++;
- }
}
}
--
2.42.0
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