From d19cb803a2ff85d1b64b9628e1aec2aa76a9260b Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Wed, 26 Feb 2014 11:25:56 -0700 Subject: vsprintf: Add support for IORESOURCE_UNSET in %pR Sometimes we have a struct resource where we know the type (MEM/IO/etc.) and the size, but we haven't assigned address space for it. The IORESOURCE_UNSET flag is a way to indicate this situation. For these "unset" resources, the start address is meaningless, so print only the size, e.g., - pci 0000:0c:00.0: reg 184: [mem 0x00000000-0x00001fff 64bit] + pci 0000:0c:00.0: reg 184: [mem size 0x2000 64bit] For %pr (printing with raw flags), we still print the address range, because %pr is mostly used for debugging anyway. Thanks to Fengguang Wu for suggesting resource_size(). Signed-off-by: Bjorn Helgaas --- lib/vsprintf.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'lib') diff --git a/lib/vsprintf.c b/lib/vsprintf.c index 185b6d300ebc..5e2cf6f342f8 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -719,10 +719,15 @@ char *resource_string(char *buf, char *end, struct resource *res, specp = &mem_spec; decode = 0; } - p = number(p, pend, res->start, *specp); - if (res->start != res->end) { - *p++ = '-'; - p = number(p, pend, res->end, *specp); + if (decode && res->flags & IORESOURCE_UNSET) { + p = string(p, pend, "size ", str_spec); + p = number(p, pend, resource_size(res), *specp); + } else { + p = number(p, pend, res->start, *specp); + if (res->start != res->end) { + *p++ = '-'; + p = number(p, pend, res->end, *specp); + } } if (decode) { if (res->flags & IORESOURCE_MEM_64) -- cgit v1.2.1