diff options
| -rw-r--r-- | drivers/soundwire/debugfs.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/soundwire/debugfs.c b/drivers/soundwire/debugfs.c index 49900cd207bc..dea782e0edc4 100644 --- a/drivers/soundwire/debugfs.c +++ b/drivers/soundwire/debugfs.c @@ -4,6 +4,7 @@ #include <linux/device.h> #include <linux/debugfs.h> #include <linux/mod_devicetable.h> +#include <linux/pm_runtime.h> #include <linux/slab.h> #include <linux/soundwire/sdw.h> #include <linux/soundwire/sdw_registers.h> @@ -35,7 +36,7 @@ static ssize_t sdw_sprintf(struct sdw_slave *slave, { int value; - value = sdw_read(slave, reg); + value = sdw_read_no_pm(slave, reg); if (value < 0) return scnprintf(buf + pos, RD_BUF - pos, "%3x\tXX\n", reg); @@ -55,6 +56,12 @@ static int sdw_slave_reg_show(struct seq_file *s_file, void *data) if (!buf) return -ENOMEM; + ret = pm_runtime_resume_and_get(&slave->dev); + if (ret < 0 && ret != -EACCES) { + kfree(buf); + return ret; + } + ret = scnprintf(buf, RD_BUF, "Register Value\n"); /* DP0 non-banked registers */ @@ -112,6 +119,10 @@ static int sdw_slave_reg_show(struct seq_file *s_file, void *data) } seq_printf(s_file, "%s", buf); + + pm_runtime_mark_last_busy(&slave->dev); + pm_runtime_put(&slave->dev); + kfree(buf); return 0; |