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iio: core: Use sysfs_match_string() helper

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Use sysfs_match_string() helper instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20230724110204.46285-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Andy Shevchenko 2023-07-24 14:02:01 +03:00 committed by Jonathan Cameron
parent 579f6b003a
commit 971ddd4b4d
1 changed files with 32 additions and 39 deletions
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71
drivers/iio/industrialio-core.c
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@ -1397,50 +1397,42 @@ static ssize_t label_show(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR_RO(label);
static const char * const clock_names[] = {
[CLOCK_REALTIME] = "realtime",
[CLOCK_MONOTONIC] = "monotonic",
[CLOCK_PROCESS_CPUTIME_ID] = "process_cputime_id",
[CLOCK_THREAD_CPUTIME_ID] = "thread_cputime_id",
[CLOCK_MONOTONIC_RAW] = "monotonic_raw",
[CLOCK_REALTIME_COARSE] = "realtime_coarse",
[CLOCK_MONOTONIC_COARSE] = "monotonic_coarse",
[CLOCK_BOOTTIME] = "boottime",
[CLOCK_REALTIME_ALARM] = "realtime_alarm",
[CLOCK_BOOTTIME_ALARM] = "boottime_alarm",
[CLOCK_SGI_CYCLE] = "sgi_cycle",
[CLOCK_TAI] = "tai",
};
static ssize_t current_timestamp_clock_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
const struct iio_dev *indio_dev = dev_to_iio_dev(dev);
const clockid_t clk = iio_device_get_clock(indio_dev);
const char *name;
ssize_t sz;
switch (clk) {
case CLOCK_REALTIME:
name = "realtime\n";
sz = sizeof("realtime\n");
break;
case CLOCK_MONOTONIC:
name = "monotonic\n";
sz = sizeof("monotonic\n");
break;
case CLOCK_MONOTONIC_RAW:
name = "monotonic_raw\n";
sz = sizeof("monotonic_raw\n");
break;
case CLOCK_REALTIME_COARSE:
name = "realtime_coarse\n";
sz = sizeof("realtime_coarse\n");
break;
case CLOCK_MONOTONIC_COARSE:
name = "monotonic_coarse\n";
sz = sizeof("monotonic_coarse\n");
break;
case CLOCK_BOOTTIME:
name = "boottime\n";
sz = sizeof("boottime\n");
break;
case CLOCK_TAI:
name = "tai\n";
sz = sizeof("tai\n");
break;
default:
BUG();
}
memcpy(buf, name, sz);
return sz;
return sysfs_emit(buf, "%s\n", clock_names[clk]);
}
static ssize_t current_timestamp_clock_store(struct device *dev,
@ -1450,22 +1442,23 @@ static ssize_t current_timestamp_clock_store(struct device *dev,
clockid_t clk;
int ret;
if (sysfs_streq(buf, "realtime"))
clk = CLOCK_REALTIME;
else if (sysfs_streq(buf, "monotonic"))
clk = CLOCK_MONOTONIC;
else if (sysfs_streq(buf, "monotonic_raw"))
clk = CLOCK_MONOTONIC_RAW;
else if (sysfs_streq(buf, "realtime_coarse"))
clk = CLOCK_REALTIME_COARSE;
else if (sysfs_streq(buf, "monotonic_coarse"))
clk = CLOCK_MONOTONIC_COARSE;
else if (sysfs_streq(buf, "boottime"))
clk = CLOCK_BOOTTIME;
else if (sysfs_streq(buf, "tai"))
clk = CLOCK_TAI;
else
ret = sysfs_match_string(clock_names, buf);
if (ret < 0)
return ret;
clk = ret;
switch (clk) {
case CLOCK_REALTIME:
case CLOCK_MONOTONIC:
case CLOCK_MONOTONIC_RAW:
case CLOCK_REALTIME_COARSE:
case CLOCK_MONOTONIC_COARSE:
case CLOCK_BOOTTIME:
case CLOCK_TAI:
break;
default:
return -EINVAL;
}
ret = iio_device_set_clock(dev_to_iio_dev(dev), clk);
if (ret)