This patch fixes a compilation problem (unused variable) with the
new SNB/IVB/HSW uncore IMC code.
In V2, we simplify the fix as suggested by Peter Zjilstra.
Reported-by: Stephen Rothwell <s...@canb.auug.org.au>
Signed-off-by: Stephane Eranian <eran...@google.com>
--
diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
index 3e5b240..d614f6b 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
@@ -1722,15 +1722,16 @@ static struct attribute_group
snb_uncore_imc_format_group = {
static void snb_uncore_imc_init_box(struct intel_uncore_box *box)
{
struct pci_dev *pdev = box->pci_dev;
- u32 addr_lo, addr_hi;
+ int where = SNB_UNCORE_PCI_IMC_BAR_OFFSET;
+ u32 pci_dword;
resource_size_t addr;
- pci_read_config_dword(pdev, SNB_UNCORE_PCI_IMC_BAR_OFFSET, &addr_lo);
- addr = addr_lo;
+ pci_read_config_dword(pdev, where, &pci_dword);
+ addr = pci_dword;
#ifdef CONFIG_PHYS_ADDR_T_64BIT
- pci_read_config_dword(pdev, SNB_UNCORE_PCI_IMC_BAR_OFFSET+4, &addr_hi);
- addr = ((resource_size_t)addr_hi << 32) | addr_lo;
+ pci_read_config_dword(pdev, where + 4, &pci_dword);
+ addr |= ((resource_size_t)pci_dword << 32);
#endif
addr &= ~(PAGE_SIZE - 1);
--
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