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Groups > linux.kernel > #1638061 > unrolled thread

[PATCH 0/4] net: stmmac: Fine-tuning for four function implementations

Started bySF Markus Elfring <elfring@users.sourceforge.net>
First post2017-05-09 14:00 +0200
Last post2017-05-10 09:00 +0200
Articles 5 — 2 participants

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  [PATCH 0/4] net: stmmac: Fine-tuning for four function  implementations SF Markus Elfring <elfring@users.sourceforge.net> - 2017-05-09 14:00 +0200
    [PATCH 1/4] net: stmmac: Combine three seq_printf() calls into a  seq_puts() in stmmac_sysfs_dma_cap_read() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-05-09 14:00 +0200
    [PATCH 4/4] net: stmmac: Delete an unnecessary return statement in  stmmac_get_tx_hwtstamp() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-05-09 14:00 +0200
    [PATCH 3/4] net: stmmac: Use seq_putc() in sysfs_display_ring() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-05-09 14:00 +0200
    Re: [PATCH 0/4] net: stmmac: Fine-tuning for four function  implementations Giuseppe CAVALLARO <peppe.cavallaro@st.com> - 2017-05-10 09:00 +0200

#1638061 — [PATCH 0/4] net: stmmac: Fine-tuning for four function implementations

FromSF Markus Elfring <elfring@users.sourceforge.net>
Date2017-05-09 14:00 +0200
Subject[PATCH 0/4] net: stmmac: Fine-tuning for four function implementations
Message-ID<tFbY5-1dU-5@gated-at.bofh.it>
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 9 May 2017 13:48:03 +0200

A few update suggestions were taken into account
from static source code analysis.

Markus Elfring (4):
  Combine three seq_printf() calls into a seq_puts() in stmmac_sysfs_dma_cap_read()
  Replace five seq_printf() calls by seq_puts()
  Use seq_putc() in sysfs_display_ring()
  Delete an unnecessary return statement in stmmac_get_tx_hwtstamp()

 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 22 ++++++++++------------
 1 file changed, 10 insertions(+), 12 deletions(-)

-- 
2.12.2

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#1638062 — [PATCH 1/4] net: stmmac: Combine three seq_printf() calls into a seq_puts() in stmmac_sysfs_dma_cap_read()

FromSF Markus Elfring <elfring@users.sourceforge.net>
Date2017-05-09 14:00 +0200
Subject[PATCH 1/4] net: stmmac: Combine three seq_printf() calls into a seq_puts() in stmmac_sysfs_dma_cap_read()
Message-ID<tFbY5-1dU-7@gated-at.bofh.it>
In reply to#1638061
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 9 May 2017 13:10:28 +0200

A bit of text was put into a sequence by three separate function calls.
Print the same data by a single function call instead.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index cd8c60132390..2949c9fc18fa 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3802,10 +3802,10 @@ static int stmmac_sysfs_dma_cap_read(struct seq_file *seq, void *v)
 		return 0;
 	}
 
-	seq_printf(seq, "==============================\n");
-	seq_printf(seq, "\tDMA HW features\n");
-	seq_printf(seq, "==============================\n");
-
+	seq_puts(seq,
+		 "==============================\n"
+		 "\tDMA HW features\n"
+		 "==============================\n");
 	seq_printf(seq, "\t10/100 Mbps: %s\n",
 		   (priv->dma_cap.mbps_10_100) ? "Y" : "N");
 	seq_printf(seq, "\t1000 Mbps: %s\n",
-- 
2.12.2

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#1638063 — [PATCH 4/4] net: stmmac: Delete an unnecessary return statement in stmmac_get_tx_hwtstamp()

FromSF Markus Elfring <elfring@users.sourceforge.net>
Date2017-05-09 14:00 +0200
Subject[PATCH 4/4] net: stmmac: Delete an unnecessary return statement in stmmac_get_tx_hwtstamp()
Message-ID<tFbY5-1dU-9@gated-at.bofh.it>
In reply to#1638061
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 9 May 2017 13:36:04 +0200

The script "checkpatch.pl" pointed information out like the following.

WARNING: void function return statements are not generally useful

Thus remove such a statement in the affected function.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 4fa95234978c..9ab4cbfa67f1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -445,8 +445,6 @@ static void stmmac_get_tx_hwtstamp(struct stmmac_priv *priv,
 		/* pass tstamp to stack */
 		skb_tstamp_tx(skb, &shhwtstamp);
 	}
-
-	return;
 }
 
 /* stmmac_get_rx_hwtstamp - get HW RX timestamps
-- 
2.12.2

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#1638064 — [PATCH 3/4] net: stmmac: Use seq_putc() in sysfs_display_ring()

FromSF Markus Elfring <elfring@users.sourceforge.net>
Date2017-05-09 14:00 +0200
Subject[PATCH 3/4] net: stmmac: Use seq_putc() in sysfs_display_ring()
Message-ID<tFbY5-1dU-13@gated-at.bofh.it>
In reply to#1638061
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 9 May 2017 13:24:27 +0200

A single character (line break) should be put into a sequence.
Thus use the corresponding function "seq_putc".

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 1f7022ce78b7..4fa95234978c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3730,7 +3730,7 @@ static void sysfs_display_ring(void *head, int size, int extend_desc,
 				   le32_to_cpu(p->des2), le32_to_cpu(p->des3));
 			p++;
 		}
-		seq_printf(seq, "\n");
+		seq_putc(seq, '\n');
 	}
 }
 
-- 
2.12.2

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#1638593

FromGiuseppe CAVALLARO <peppe.cavallaro@st.com>
Date2017-05-10 09:00 +0200
Message-ID<tFtLj-5MF-17@gated-at.bofh.it>
In reply to#1638061
Hello Markus

Thanks a lot for your effort on stmmac

On 5/9/2017 1:51 PM, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Tue, 9 May 2017 13:48:03 +0200
>
> A few update suggestions were taken into account
> from static source code analysis.
>
> Markus Elfring (4):
>    Combine three seq_printf() calls into a seq_puts() in stmmac_sysfs_dma_cap_read()
>    Replace five seq_printf() calls by seq_puts()
>    Use seq_putc() in sysfs_display_ring()
>    Delete an unnecessary return statement in stmmac_get_tx_hwtstamp()
>
>   drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 22 ++++++++++------------
>   1 file changed, 10 insertions(+), 12 deletions(-)

Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>

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