On 06/09/2022 15.19, Russell King (Oracle) wrote: > From: Hector Martin <marcan@xxxxxxxxx> > > %p4cc is designed for DRM/V4L2 FOURCCs with their specific quirks, but > it's useful to be able to print generic 4-character codes formatted as > an integer. Extend it to add format specifiers for printing generic > 32-bit FOURCCs with various endian semantics: > > Documentation/core-api/printk-formats.rst | 32 +++++++++++++++++++++ > lib/vsprintf.c | 35 +++++++++++++++++++---- > 2 files changed, 61 insertions(+), 6 deletions(-) Please also update lib/test_printf.c with a few test cases when modifying/extending vsnprintf(). > diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst > index 5e89497ba314..22c33398ec02 100644 > --- a/Documentation/core-api/printk-formats.rst > +++ b/Documentation/core-api/printk-formats.rst > @@ -625,6 +625,38 @@ Passed by reference. > %p4cc Y10 little-endian (0x20303159) > %p4cc NV12 big-endian (0xb231564e) > > +Generic FourCC code > +------------------- > + > +:: > + %p4c[hnbl] gP00 (0x67503030) > + Typo, I think. hrbl ? Rasmus
