Commit 29a3388b authored by Stephen Douthit's avatar Stephen Douthit Committed by Tony Luck

EDAC, pnd2: Fix ioremap() size in dnv_rd_reg()

Depending on how BIOS has marked the reserved region containing the 32KB
MCHBAR you can get warnings like:

resource sanity check: requesting [mem 0xfed10000-0xfed1ffff], which spans more than reserved [mem 0xfed10000-0xfed17fff]
caller dnv_rd_reg+0xc8/0x240 [pnd2_edac] mapping multiple BARs

Not all of the mmio regions used in dnv_rd_reg() are the same size.  The
MCHBAR window is 32KB and the sideband ports are 64KB.  Pass the correct
size to ioremap() depending on which resource we're reading from.
Signed-off-by: default avatarStephen Douthit <stephend@silicom-usa.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent 82413e56
......@@ -260,11 +260,14 @@ static u64 get_sideband_reg_base_addr(void)
}
}
#define DNV_MCHBAR_SIZE 0x8000
#define DNV_SB_PORT_SIZE 0x10000
static int dnv_rd_reg(int port, int off, int op, void *data, size_t sz, char *name)
{
struct pci_dev *pdev;
char *base;
u64 addr;
unsigned long size;
if (op == 4) {
pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 0x1980, NULL);
......@@ -279,15 +282,17 @@ static int dnv_rd_reg(int port, int off, int op, void *data, size_t sz, char *na
addr = get_mem_ctrl_hub_base_addr();
if (!addr)
return -ENODEV;
size = DNV_MCHBAR_SIZE;
} else {
/* MMIO via sideband register base address */
addr = get_sideband_reg_base_addr();
if (!addr)
return -ENODEV;
addr += (port << 16);
size = DNV_SB_PORT_SIZE;
}
base = ioremap((resource_size_t)addr, 0x10000);
base = ioremap((resource_size_t)addr, size);
if (!base)
return -ENODEV;
......
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