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Subject[PATCH v2] x86/PCI: Make pci=earlydump output neat
Date
Currently the early dump of PCI configuration space looks quite unhelpful, e.g.

[ 0.000000] 60:
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000] 00
[ 0.000000]

which makes really hard to get anything out of this. Convert the function to
use print_hex_dump() to make output neat.

In the result we will have

[ 0.000000] 00000060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

which is much, much better.

Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
- add Mika's tag
- address style issue
arch/x86/pci/early.c | 19 +++++--------------
1 file changed, 5 insertions(+), 14 deletions(-)

diff --git a/arch/x86/pci/early.c b/arch/x86/pci/early.c
index f0114007e915..e5f753cbb1c3 100644
--- a/arch/x86/pci/early.c
+++ b/arch/x86/pci/early.c
@@ -59,24 +59,15 @@ int early_pci_allowed(void)

void early_dump_pci_device(u8 bus, u8 slot, u8 func)
{
+ u32 value[256 / 4];
int i;
- int j;
- u32 val;

- printk(KERN_INFO "pci 0000:%02x:%02x.%d config space:",
- bus, slot, func);
+ pr_info("pci 0000:%02x:%02x.%d config space:\n", bus, slot, func);

- for (i = 0; i < 256; i += 4) {
- if (!(i & 0x0f))
- printk("\n %02x:",i);
+ for (i = 0; i < 256; i += 4)
+ value[i / 4] = read_pci_config(bus, slot, func, i);

- val = read_pci_config(bus, slot, func, i);
- for (j = 0; j < 4; j++) {
- printk(" %02x", val & 0xff);
- val >>= 8;
- }
- }
- printk("\n");
+ print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1, value, 256, false);
}

void early_dump_pci_devices(void)
--
2.17.0
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