Messages in this thread Patch in this message | | | From | Frank Haverkamp <> | Subject | [PATCH 8/9] GenWQE: Simplify sysfs buffer printouts | Date | Mon, 4 Nov 2013 18:08:08 +0100 |
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Rework code which was inteneded to print out multiple lines via sysfs attributes. This is not needed anymore. We just print one item.
Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com> --- drivers/misc/genwqe/card_sysfs.c | 59 +++++++++----------------------------- 1 files changed, 14 insertions(+), 45 deletions(-)
diff --git a/drivers/misc/genwqe/card_sysfs.c b/drivers/misc/genwqe/card_sysfs.c index 6a51ad7..f29ce55 100644 --- a/drivers/misc/genwqe/card_sysfs.c +++ b/drivers/misc/genwqe/card_sysfs.c @@ -48,82 +48,65 @@ static const char * const genwqe_types[] = { static ssize_t status_show(struct device *dev, struct device_attribute *attr, char *buf) { - ssize_t len = 0; struct genwqe_dev *cd = dev_get_drvdata(dev); const char *cs[GENWQE_CARD_STATE_MAX] = { "unused", "used", "error" }; - len += scnprintf(&buf[len], PAGE_SIZE - len, - "%s\n", cs[cd->card_state]); - return len; + return scnprintf(buf, PAGE_SIZE, "%s\n", cs[cd->card_state]); } static DEVICE_ATTR_RO(status); static ssize_t appid_show(struct device *dev, struct device_attribute *attr, char *buf) { - ssize_t len = 0; char app_name[5]; struct genwqe_dev *cd = dev_get_drvdata(dev); genwqe_read_app_id(cd, app_name, sizeof(app_name)); - len += scnprintf(&buf[len], PAGE_SIZE - len, - "%s\n", app_name); - return len; + return scnprintf(buf, PAGE_SIZE, "%s\n", app_name); } static DEVICE_ATTR_RO(appid); static ssize_t version_show(struct device *dev, struct device_attribute *attr, char *buf) { - ssize_t len = 0; u64 slu_id, app_id; struct genwqe_dev *cd = dev_get_drvdata(dev); slu_id = __genwqe_readq(cd, IO_SLU_UNITCFG); app_id = __genwqe_readq(cd, IO_APP_UNITCFG); - len += scnprintf(&buf[len], PAGE_SIZE - len, - "%016llx.%016llx\n", slu_id, app_id); - return len; + return scnprintf(buf, PAGE_SIZE, "%016llx.%016llx\n", slu_id, app_id); } static DEVICE_ATTR_RO(version); static ssize_t type_show(struct device *dev, struct device_attribute *attr, char *buf) { - ssize_t len = 0; u8 card_type; struct genwqe_dev *cd = dev_get_drvdata(dev); card_type = genwqe_card_type(cd); - len += scnprintf(&buf[len], PAGE_SIZE - len, - "%s\n", (card_type >= ARRAY_SIZE(genwqe_types)) ? + return scnprintf(buf, PAGE_SIZE, "%s\n", + (card_type >= ARRAY_SIZE(genwqe_types)) ? "invalid" : genwqe_types[card_type]); - return len; } static DEVICE_ATTR_RO(type); static ssize_t driver_show(struct device *dev, struct device_attribute *attr, char *buf) { - ssize_t len = 0; - len += scnprintf(&buf[len], PAGE_SIZE - len, - "%s\n", DRV_VERS_STRING); - return len; + return scnprintf(buf, PAGE_SIZE, "%s\n", DRV_VERS_STRING); } static DEVICE_ATTR_RO(driver); static ssize_t tempsens_show(struct device *dev, struct device_attribute *attr, char *buf) { - ssize_t len = 0; u64 tempsens; struct genwqe_dev *cd = dev_get_drvdata(dev); tempsens = __genwqe_readq(cd, IO_SLU_TEMPERATURE_SENSOR); - len += scnprintf(&buf[len], PAGE_SIZE - len, - "%016llx\n", tempsens); - return len; + return scnprintf(buf, PAGE_SIZE, "%016llx\n", tempsens); } static DEVICE_ATTR_RO(tempsens); @@ -131,14 +114,11 @@ static ssize_t base_clock_show(struct device *dev, struct device_attribute *attr, char *buf) { - ssize_t len = 0; u64 base_clock; struct genwqe_dev *cd = dev_get_drvdata(dev); base_clock = genwqe_base_clock_frequency(cd); - len += scnprintf(&buf[len], PAGE_SIZE - len, - "%lld\n", base_clock); - return len; + return scnprintf(buf, PAGE_SIZE, "%lld\n", base_clock); } static DEVICE_ATTR_RO(base_clock); @@ -160,17 +140,13 @@ static DEVICE_ATTR_RO(base_clock); * image. */ static ssize_t curr_bitstream_show(struct device *dev, - struct device_attribute *attr, - char *buf) + struct device_attribute *attr, char *buf) { - ssize_t len = 0; int curr_bitstream; struct genwqe_dev *cd = dev_get_drvdata(dev); curr_bitstream = __genwqe_readq(cd, IO_SLU_BITSTREAM) & 0x1; - len += scnprintf(&buf[len], PAGE_SIZE - len, - "%d\n", curr_bitstream); - return len; + return scnprintf(buf, PAGE_SIZE, "%d\n", curr_bitstream); } static DEVICE_ATTR_RO(curr_bitstream); @@ -180,10 +156,8 @@ static DEVICE_ATTR_RO(curr_bitstream); * IO_SLC_CFGREG_SOFTRESET: This register can only be accessed by the PF. */ static ssize_t next_bitstream_show(struct device *dev, - struct device_attribute *attr, - char *buf) + struct device_attribute *attr, char *buf) { - ssize_t len = 0; int next_bitstream; struct genwqe_dev *cd = dev_get_drvdata(dev); @@ -198,9 +172,7 @@ static ssize_t next_bitstream_show(struct device *dev, next_bitstream = -1; break; /* error */ } - len += scnprintf(&buf[len], PAGE_SIZE - len, - "%d\n", next_bitstream); - return len; + return scnprintf(buf, PAGE_SIZE, "%d\n", next_bitstream); } static ssize_t next_bitstream_store(struct device *dev, @@ -233,12 +205,9 @@ static DEVICE_ATTR_RW(next_bitstream); * FIXME Implement me! */ static ssize_t cpld_version_show(struct device *dev, - struct device_attribute *attr, - char *buf) + struct device_attribute *attr, char *buf) { - ssize_t len = 0; - len += scnprintf(&buf[len], PAGE_SIZE - len, "unknown (FIXME)\n"); - return len; + return scnprintf(buf, PAGE_SIZE, "unknown (FIXME)\n"); } static DEVICE_ATTR_RO(cpld_version); -- 1.7.1
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