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Date: Thu, 11 Jun 2015 14:06:25 +0200 From: Quentin Lambert <lambert.quentin@...il.com> To: wharms@....de CC: Johannes Berg <johannes@...solutions.net>, Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>, linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, alsa-devel@...a-project.org, kernel-janitors@...r.kernel.org Subject: Re: [PATCH v2] ALSA: aoa: convert bus code to use dev_groups On 11/06/2015 13:55, walter harms wrote: > > Am 11.06.2015 10:03, schrieb Quentin Lambert: >> The dev_attrs field of struct bus_type is going away, use dev_groups instead. >> This converts the soundbus code to use the correct field. >> >> Given that all other usages of the macro define the struct attribute >> *xxx_attrs[] in the same file they assign the .dev_groups field, this patch >> merges sysfs.c into core.c. >> >> These modifications were made using Coccinelle. >> >> Signed-off-by: Quentin Lambert <lambert.quentin@...il.com> >> --- >> Changes since v1: >> - Fix the commit message to actually talk about soundbus rather than MDIO >> - This version attempt to fix a problem resulting from the macro >> ATTRIBUTE_GROUPS declaring the structure as static by merging sysfs.c into >> core.c. I understand that this may not be the prefered solution since >> Takashi suggested that adding a comment line to the previous version could >> be acceptable. >> >> sound/aoa/soundbus/Makefile | 2 - >> sound/aoa/soundbus/core.c | 44 +++++++++++++++++++++++++++++++++++++++++- >> sound/aoa/soundbus/soundbus.h | 2 - >> sound/aoa/soundbus/sysfs.c | 42 ---------------------------------------- >> 4 files changed, 44 insertions(+), 46 deletions(-) >> >> --- a/sound/aoa/soundbus/Makefile >> +++ b/sound/aoa/soundbus/Makefile >> @@ -1,3 +1,3 @@ >> obj-$(CONFIG_SND_AOA_SOUNDBUS) += snd-aoa-soundbus.o >> -snd-aoa-soundbus-objs := core.o sysfs.o >> +snd-aoa-soundbus-objs := core.o >> obj-$(CONFIG_SND_AOA_SOUNDBUS_I2S) += i2sbus/ >> --- a/sound/aoa/soundbus/core.c >> +++ b/sound/aoa/soundbus/core.c >> @@ -150,6 +150,48 @@ static int soundbus_device_resume(struct >> >> #endif /* CONFIG_PM */ >> >> +#define soundbus_config_of_attr(field, format_string) \ >> +static ssize_t \ >> +field##_show (struct device *dev, struct device_attribute *attr, \ >> + char *buf) \ >> +{ \ >> + struct soundbus_dev *mdev = to_soundbus_device (dev); \ >> + return sprintf (buf, format_string, mdev->ofdev.dev.of_node->field); \ >> +} >> + >> +static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, >> + char *buf) >> +{ >> + struct soundbus_dev *sdev = to_soundbus_device(dev); >> + struct platform_device *of = &sdev->ofdev; >> + int length; >> + >> + if (*sdev->modalias) { >> + strlcpy(buf, sdev->modalias, sizeof(sdev->modalias) + 1); >> + strcat(buf, "\n"); >> + length = strlen(buf); > > for my curiosity: > why not sprintf() ? almost any other code seems to use sprintf(). I wouldn't be able to justify that as this is part is simply a copy paste from sysfs.c to core.c Quentin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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