docs: printk-formats: Treat char as always unsigned
The Linux kernel switched to have char be equivalent to usigned char.
Reflect this in the printk specifiers.
Fixes: 3bc753c06dd0 ("kbuild: treat char as always unsigned")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20230703145839.14248-2-andriy.shevchenko@linux.intel.com
diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst
index 956c87b..0eed8a2 100644
--- a/Documentation/core-api/printk-formats.rst
+++ b/Documentation/core-api/printk-formats.rst
@@ -15,8 +15,9 @@
If variable is of Type, use printk format specifier:
------------------------------------------------------------
- char %d or %hhx
+ signed char %d or %hhx
unsigned char %u or %x
+ char %u or %x
short int %d or %hx
unsigned short int %u or %x
int %d or %x
