Commit 67434ce5 authored by Kaushlendra Kumar's avatar Kaushlendra Kumar Committed by Rafael J. Wysocki
Browse files

PM: sleep: Replace snprintf() with scnprintf() in show_trace_dev_match() 



Replace snprintf() with scnprintf() in show_trace_dev_match() to simplify
buffer length handling. The scnprintf() function returns the number of
characters actually written (excluding the null terminator), which
eliminates the need for manual length checking and clamping.

This change removes the redundant size check since scnprintf() guarantees
that the return value will never exceed the buffer size, making the code
cleaner and less error-prone.

Signed-off-by: default avatarKaushlendra Kumar <kaushlendra.kumar@intel.com>
Link: https://patch.msgid.link/20250922055231.3523680-1-kaushlendra.kumar@intel.com


[ rjw: Subject adjustment ]
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 3a866087

drivers/base/power/trace.c

+1 −3
Original line number Diff line number Diff line
@@ -238,10 +238,8 @@ int show_trace_dev_match(char *buf, size_t size) 
		unsigned int hash = hash_string(DEVSEED, dev_name(dev),

						DEVHASH);

		if (hash == value) {

			int len = snprintf(buf, size, "%s\n",

			int len = scnprintf(buf, size, "%s\n",

					    dev_driver_string(dev));

			if (len > size)

				len = size;

			buf += len;

			ret += len;

			size -= len;