[PATCH net-next] net: ethernet: Remove set but not used variable

[PATCH net-next] net: ethernet: Remove set but not used variable

[Zheng Yongjun]

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/ethernet/cavium/liquidio/octeon_device.c: In function lio_pci_readq:
drivers/net/ethernet/cavium/liquidio/octeon_device.c:1327:6: warning: variable ‘val32’ set but not used [-Wunused-but-set-variable]

drivers/net/ethernet/cavium/liquidio/octeon_device.c: In function lio_pci_writeq:
drivers/net/ethernet/cavium/liquidio/octeon_device.c:1358:6: warning: variable ‘val32’ set but not used [-Wunused-but-set-variable]

these variable is never used, so remove it.

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
---
 drivers/net/ethernet/cavium/liquidio/octeon_device.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_device.c b/drivers/net/ethernet/cavium/liquidio/octeon_device.c
index ac32facaa427..fbde7c58c4db 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_device.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_device.c
@@ -1324,7 +1324,7 @@ u64 lio_pci_readq(struct octeon_device *oct, u64 addr)
 {
 	u64 val64;
 	unsigned long flags;
-	u32 val32, addrhi;
+	u32 addrhi;
 
 	spin_lock_irqsave(&oct->pci_win_lock, flags);
 
@@ -1339,10 +1339,10 @@ u64 lio_pci_readq(struct octeon_device *oct, u64 addr)
 	writel(addrhi, oct->reg_list.pci_win_rd_addr_hi);
 
 	/* Read back to preserve ordering of writes */
-	val32 = readl(oct->reg_list.pci_win_rd_addr_hi);
+	readl(oct->reg_list.pci_win_rd_addr_hi);
 
 	writel(addr & 0xffffffff, oct->reg_list.pci_win_rd_addr_lo);
-	val32 = readl(oct->reg_list.pci_win_rd_addr_lo);
+	readl(oct->reg_list.pci_win_rd_addr_lo);
 
 	val64 = readq(oct->reg_list.pci_win_rd_data);
 
@@ -1355,7 +1355,6 @@ void lio_pci_writeq(struct octeon_device *oct,
 		    u64 val,
 		    u64 addr)
 {
-	u32 val32;
 	unsigned long flags;
 
 	spin_lock_irqsave(&oct->pci_win_lock, flags);
@@ -1365,7 +1364,7 @@ void lio_pci_writeq(struct octeon_device *oct,
 	/* The write happens when the LSB is written. So write MSB first. */
 	writel(val >> 32, oct->reg_list.pci_win_wr_data_hi);
 	/* Read the MSB to ensure ordering of writes. */
-	val32 = readl(oct->reg_list.pci_win_wr_data_hi);
+	readl(oct->reg_list.pci_win_wr_data_hi);
 
 	writel(val & 0xffffffff, oct->reg_list.pci_win_wr_data_lo);
 
-- 
2.17.1

Re: [PATCH net-next] net: ethernet: Remove set but not used variable

[David Miller]

From: Zheng Yongjun <zhengyongjun3@huawei.com>
Date: Fri, 18 Sep 2020 16:39:38 +0800

> Fixes gcc '-Wunused-but-set-variable' warning:
> 
> drivers/net/ethernet/cavium/liquidio/octeon_device.c: In function lio_pci_readq:
> drivers/net/ethernet/cavium/liquidio/octeon_device.c:1327:6: warning: variable ‘val32’ set but not used [-Wunused-but-set-variable]
> 
> drivers/net/ethernet/cavium/liquidio/octeon_device.c: In function lio_pci_writeq:
> drivers/net/ethernet/cavium/liquidio/octeon_device.c:1358:6: warning: variable ‘val32’ set but not used [-Wunused-but-set-variable]
> 
> these variable is never used, so remove it.
> 
> Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>

The proper subsystem prefix for these changes is just "liquidio: ".

For changes to a specific driver it is not appropriate to use
"net: ethernet: " or similar.

Please fix up your Subject line and resubmit.

Thank you.

答复: [PATCH net-next] net: ethernet: Remove set but not used variable

[zhengyongjun]

I have fix it and send back the patch to you. Thank you very much.

-----邮件原件-----
发件人: David Miller [mailto:davem@davemloft.net] 
发送时间: 2020年9月19日 5:30
收件人: zhengyongjun <zhengyongjun3@huawei.com>
抄送: fmanlunas@marvell.com; sburla@marvell.com; dchickles@marvell.com; kuba@kernel.org; netdev@vger.kernel.org; linux-kernel@vger.kernel.org
主题: Re: [PATCH net-next] net: ethernet: Remove set but not used variable

From: Zheng Yongjun <zhengyongjun3@huawei.com>
Date: Fri, 18 Sep 2020 16:39:38 +0800

> Fixes gcc '-Wunused-but-set-variable' warning:
> 
> drivers/net/ethernet/cavium/liquidio/octeon_device.c: In function lio_pci_readq:
> drivers/net/ethernet/cavium/liquidio/octeon_device.c:1327:6: warning: variable ʽval32ʼ set but not used [-Wunused-but-set-variable]
> 
> drivers/net/ethernet/cavium/liquidio/octeon_device.c: In function lio_pci_writeq:
> drivers/net/ethernet/cavium/liquidio/octeon_device.c:1358:6: warning: variable ʽval32ʼ set but not used [-Wunused-but-set-variable]
> 
> these variable is never used, so remove it.
> 
> Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>

The proper subsystem prefix for these changes is just "liquidio: ".

For changes to a specific driver it is not appropriate to use
"net: ethernet: " or similar.

Please fix up your Subject line and resubmit.

Thank you.