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Groups > linux.kernel > #1490552 > unrolled thread
| Started by | Baoyou Xie <baoyou.xie@linaro.org> |
|---|---|
| First post | 2016-09-24 07:20 +0200 |
| Last post | 2016-09-24 21:40 +0200 |
| Articles | 3 — 3 participants |
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[PATCH] HSI: omap_ssi_core: move function declaration to header file Baoyou Xie <baoyou.xie@linaro.org> - 2016-09-24 07:20 +0200
Re: [PATCH] HSI: omap_ssi_core: move function declaration to header file Arnd Bergmann <arnd@arndb.de> - 2016-09-24 11:00 +0200
Re: [PATCH] HSI: omap_ssi_core: move function declaration to header file Sebastian Reichel <sre@kernel.org> - 2016-09-24 21:40 +0200
| From | Baoyou Xie <baoyou.xie@linaro.org> |
|---|---|
| Date | 2016-09-24 07:20 +0200 |
| Subject | [PATCH] HSI: omap_ssi_core: move function declaration to header file |
| Message-ID | <skNxv-5iQ-1@gated-at.bofh.it> |
We get 1 warning when building kernel with W=1: drivers/hsi/controllers/omap_ssi_core.c:181:6: warning: no previous prototype for 'ssi_waketest' [-Wmissing-prototypes] In fact, this function is declared in drivers/hsi/clients/ssi_protocol.c, but should be declared in a header file. So this patch moves the function declaration to include/linux/hsi/hsi.h. Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> --- drivers/hsi/clients/ssi_protocol.c | 2 -- include/linux/hsi/hsi.h | 1 + 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/hsi/clients/ssi_protocol.c b/drivers/hsi/clients/ssi_protocol.c index 6031cd1..fe86444 100644 --- a/drivers/hsi/clients/ssi_protocol.c +++ b/drivers/hsi/clients/ssi_protocol.c @@ -45,8 +45,6 @@ #include <linux/hsi/hsi.h> #include <linux/hsi/ssi_protocol.h> -void ssi_waketest(struct hsi_client *cl, unsigned int enable); - #define SSIP_TXQUEUE_LEN 100 #define SSIP_MAX_MTU 65535 #define SSIP_DEFAULT_MTU 4000 diff --git a/include/linux/hsi/hsi.h b/include/linux/hsi/hsi.h index 5740254..676a656 100644 --- a/include/linux/hsi/hsi.h +++ b/include/linux/hsi/hsi.h @@ -161,6 +161,7 @@ static inline void *hsi_client_drvdata(struct hsi_client *cl) int hsi_register_port_event(struct hsi_client *cl, void (*handler)(struct hsi_client *, unsigned long)); int hsi_unregister_port_event(struct hsi_client *cl); +void ssi_waketest(struct hsi_client *cl, unsigned int enable); /** * struct hsi_client_driver - Driver associated to an HSI client -- 2.7.4
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| From | Arnd Bergmann <arnd@arndb.de> |
|---|---|
| Date | 2016-09-24 11:00 +0200 |
| Message-ID | <skQYp-7h6-1@gated-at.bofh.it> |
| In reply to | #1490552 |
On Saturday, September 24, 2016 1:11:56 PM CEST Baoyou Xie wrote: > --- > drivers/hsi/clients/ssi_protocol.c | 2 -- > include/linux/hsi/hsi.h | 1 + > 2 files changed, 1 insertion(+), 2 deletions(-) > > diff --git a/drivers/hsi/clients/ssi_protocol.c b/drivers/hsi/clients/ssi_protocol.c > index 6031cd1..fe86444 100644 > --- a/drivers/hsi/clients/ssi_protocol.c > +++ b/drivers/hsi/clients/ssi_protocol.c > @@ -45,8 +45,6 @@ > #include <linux/hsi/hsi.h> > #include <linux/hsi/ssi_protocol.h> > > -void ssi_waketest(struct hsi_client *cl, unsigned int enable); > - > #define SSIP_TXQUEUE_LEN 100 > #define SSIP_MAX_MTU 65535 > #define SSIP_DEFAULT_MTU 4000 > Maybe the declaration should be moved to include/linux/hsi/ssi_protocol.h instead of include/linux/hsi/hsi.h? It's not completely clear as the exported function is a bit of a layering violation. Arnd
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| From | Sebastian Reichel <sre@kernel.org> |
|---|---|
| Date | 2016-09-24 21:40 +0200 |
| Subject | Re: [PATCH] HSI: omap_ssi_core: move function declaration to header file |
| Message-ID | <sl0XM-53s-15@gated-at.bofh.it> |
| In reply to | #1490593 |
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Hi, On Sat, Sep 24, 2016 at 10:58:15AM +0200, Arnd Bergmann wrote: > On Saturday, September 24, 2016 1:11:56 PM CEST Baoyou Xie wrote: > > --- > > drivers/hsi/clients/ssi_protocol.c | 2 -- > > include/linux/hsi/hsi.h | 1 + > > 2 files changed, 1 insertion(+), 2 deletions(-) > > > > diff --git a/drivers/hsi/clients/ssi_protocol.c b/drivers/hsi/clients/ssi_protocol.c > > index 6031cd1..fe86444 100644 > > --- a/drivers/hsi/clients/ssi_protocol.c > > +++ b/drivers/hsi/clients/ssi_protocol.c > > @@ -45,8 +45,6 @@ > > #include <linux/hsi/hsi.h> > > #include <linux/hsi/ssi_protocol.h> > > > > -void ssi_waketest(struct hsi_client *cl, unsigned int enable); > > - > > #define SSIP_TXQUEUE_LEN 100 > > #define SSIP_MAX_MTU 65535 > > #define SSIP_DEFAULT_MTU 4000 > > > > Maybe the declaration should be moved to include/linux/hsi/ssi_protocol.h > instead of include/linux/hsi/hsi.h? ssi_protocol.h is not included by the ssi (controller) driver, so that will not fix the warning. > It's not completely clear as the exported function is a bit of a > layering violation. Yes it is and the code contains a^W lots of FIXME about this. I have not yet tried to remove it as suggested in the FIXME (which predates my maintenance, but it's probably not possible without modifying the modem FW). I'm fine with adding it the function prototype to hsi.h to fix the warning, but please add a comment, that it's a layering violation and should not be used. -- Sebastian
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