* [PATCH] usb: musb: remove redundant stack buffers
@ 2016-08-04 18:58 Rasmus Villemoes
2016-09-12 18:40 ` Bin Liu
0 siblings, 1 reply; 2+ messages in thread
From: Rasmus Villemoes @ 2016-08-04 18:58 UTC (permalink / raw)
To: Bin Liu, Greg Kroah-Hartman; +Cc: Rasmus Villemoes, linux-usb, linux-kernel
aDate is always the empty string, so entirely pointless. The aRevision
formatting might as well be done as part of the pr_debug() call - that
also avoids it altogether if pr_debug is compiled out.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
drivers/usb/musb/musb_core.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 74fc3069cb42..1724f1889c99 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1448,7 +1448,7 @@ static int musb_core_init(u16 musb_type, struct musb *musb)
{
u8 reg;
char *type;
- char aInfo[90], aRevision[32], aDate[12];
+ char aInfo[90];
void __iomem *mbase = musb->mregs;
int status = 0;
int i;
@@ -1482,7 +1482,6 @@ static int musb_core_init(u16 musb_type, struct musb *musb)
pr_debug("%s: ConfigData=0x%02x (%s)\n", musb_driver_name, reg, aInfo);
- aDate[0] = 0;
if (MUSB_CONTROLLER_MHDRC == musb_type) {
musb->is_multipoint = 1;
type = "M";
@@ -1497,11 +1496,10 @@ static int musb_core_init(u16 musb_type, struct musb *musb)
/* log release info */
musb->hwvers = musb_read_hwvers(mbase);
- snprintf(aRevision, 32, "%d.%d%s", MUSB_HWVERS_MAJOR(musb->hwvers),
- MUSB_HWVERS_MINOR(musb->hwvers),
- (musb->hwvers & MUSB_HWVERS_RC) ? "RC" : "");
- pr_debug("%s: %sHDRC RTL version %s %s\n",
- musb_driver_name, type, aRevision, aDate);
+ pr_debug("%s: %sHDRC RTL version %d.%d%s\n",
+ musb_driver_name, type, MUSB_HWVERS_MAJOR(musb->hwvers),
+ MUSB_HWVERS_MINOR(musb->hwvers),
+ (musb->hwvers & MUSB_HWVERS_RC) ? "RC" : "");
/* configure ep0 */
musb_configure_ep0(musb);
--
2.1.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] usb: musb: remove redundant stack buffers
2016-08-04 18:58 [PATCH] usb: musb: remove redundant stack buffers Rasmus Villemoes
@ 2016-09-12 18:40 ` Bin Liu
0 siblings, 0 replies; 2+ messages in thread
From: Bin Liu @ 2016-09-12 18:40 UTC (permalink / raw)
To: Rasmus Villemoes; +Cc: Greg Kroah-Hartman, linux-usb, linux-kernel
Hi,
On Thu, Aug 04, 2016 at 08:58:18PM +0200, Rasmus Villemoes wrote:
> aDate is always the empty string, so entirely pointless. The aRevision
> formatting might as well be done as part of the pr_debug() call - that
> also avoids it altogether if pr_debug is compiled out.
>
> Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Bin Liu <b-liu@ti.com>
Regards,
-Bin.
> ---
> drivers/usb/musb/musb_core.c | 12 +++++-------
> 1 file changed, 5 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
> index 74fc3069cb42..1724f1889c99 100644
> --- a/drivers/usb/musb/musb_core.c
> +++ b/drivers/usb/musb/musb_core.c
> @@ -1448,7 +1448,7 @@ static int musb_core_init(u16 musb_type, struct musb *musb)
> {
> u8 reg;
> char *type;
> - char aInfo[90], aRevision[32], aDate[12];
> + char aInfo[90];
> void __iomem *mbase = musb->mregs;
> int status = 0;
> int i;
> @@ -1482,7 +1482,6 @@ static int musb_core_init(u16 musb_type, struct musb *musb)
>
> pr_debug("%s: ConfigData=0x%02x (%s)\n", musb_driver_name, reg, aInfo);
>
> - aDate[0] = 0;
> if (MUSB_CONTROLLER_MHDRC == musb_type) {
> musb->is_multipoint = 1;
> type = "M";
> @@ -1497,11 +1496,10 @@ static int musb_core_init(u16 musb_type, struct musb *musb)
>
> /* log release info */
> musb->hwvers = musb_read_hwvers(mbase);
> - snprintf(aRevision, 32, "%d.%d%s", MUSB_HWVERS_MAJOR(musb->hwvers),
> - MUSB_HWVERS_MINOR(musb->hwvers),
> - (musb->hwvers & MUSB_HWVERS_RC) ? "RC" : "");
> - pr_debug("%s: %sHDRC RTL version %s %s\n",
> - musb_driver_name, type, aRevision, aDate);
> + pr_debug("%s: %sHDRC RTL version %d.%d%s\n",
> + musb_driver_name, type, MUSB_HWVERS_MAJOR(musb->hwvers),
> + MUSB_HWVERS_MINOR(musb->hwvers),
> + (musb->hwvers & MUSB_HWVERS_RC) ? "RC" : "");
>
> /* configure ep0 */
> musb_configure_ep0(musb);
> --
> 2.1.4
>
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2016-08-04 18:58 [PATCH] usb: musb: remove redundant stack buffers Rasmus Villemoes
2016-09-12 18:40 ` Bin Liu
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