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    Subject[PATCH v1 4/7] resource: add bus number support
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    Date

    Add support for bus number resources. This is for bridges with a range of
    bus numbers behind them.

    Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
    ---

    include/linux/ioport.h | 1 +
    lib/vsprintf.c | 9 +++++++++
    2 files changed, 10 insertions(+), 0 deletions(-)


    diff --git a/include/linux/ioport.h b/include/linux/ioport.h
    index e38dedc..17c9b0e 100644
    --- a/include/linux/ioport.h
    +++ b/include/linux/ioport.h
    @@ -39,6 +39,7 @@ struct resource_list {
    #define IORESOURCE_MEM 0x00000200
    #define IORESOURCE_IRQ 0x00000400
    #define IORESOURCE_DMA 0x00000800
    +#define IORESOURCE_BUS 0x00001000

    #define IORESOURCE_PREFETCH 0x00002000 /* No side effects */
    #define IORESOURCE_READONLY 0x00004000
    diff --git a/lib/vsprintf.c b/lib/vsprintf.c
    index 9ed3976..af3236c 100644
    --- a/lib/vsprintf.c
    +++ b/lib/vsprintf.c
    @@ -609,6 +609,12 @@ static char *resource_string(char *buf, char *end, struct resource *res,
    .precision = -1,
    .flags = SPECIAL | SMALL | ZEROPAD,
    };
    + static const struct printf_spec bus_spec = {
    + .base = 16,
    + .field_width = 2,
    + .precision = -1,
    + .flags = SMALL | ZEROPAD,
    + };
    static const struct printf_spec dec_spec = {
    .base = 10,
    .precision = -1,
    @@ -651,6 +657,9 @@ static char *resource_string(char *buf, char *end, struct resource *res,
    } else if (res->flags & IORESOURCE_DMA) {
    p = string(p, pend, "dma ", str_spec);
    specp = &dec_spec;
    + } else if (res->flags & IORESOURCE_BUS) {
    + p = string(p, pend, "bus ", str_spec);
    + specp = &bus_spec;
    } else {
    p = string(p, pend, "??? ", str_spec);
    specp = &mem_spec;


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