On Thu, Sep 21, 2017 at 10:17:10AM -0700, hotran wrote: > As the PCC shared memory could be in IO region which doesn't > support caching, this patch simply uses ioremap() for IO region. > > Signed-off-by: Hoan Tran <hotran@xxxxxxx> Applied to hwmon-next. Thanks, Guenter > --- > drivers/hwmon/xgene-hwmon.c | 14 +++++++++++--- > 1 file changed, 11 insertions(+), 3 deletions(-) > > diff --git a/drivers/hwmon/xgene-hwmon.c b/drivers/hwmon/xgene-hwmon.c > index 5cd327e..2dac1ed 100644 > --- a/drivers/hwmon/xgene-hwmon.c > +++ b/drivers/hwmon/xgene-hwmon.c > @@ -32,6 +32,7 @@ > #include <linux/kfifo.h> > #include <linux/mailbox_controller.h> > #include <linux/mailbox_client.h> > +#include <linux/memblock.h> > #include <linux/module.h> > #include <linux/of.h> > #include <linux/platform_device.h> > @@ -135,6 +136,14 @@ static u16 xgene_word_tst_and_clr(u16 *addr, u16 mask) > return ret; > } > > +static void __iomem *pcc_ioremap(phys_addr_t phys, size_t size) > +{ > + if (!memblock_is_memory(phys)) > + return ioremap(phys, size); > + > + return memremap(phys, size, MEMREMAP_WB); > +} > + > static int xgene_hwmon_pcc_rd(struct xgene_hwmon_dev *ctx, u32 *msg) > { > struct acpi_pcct_shared_memory *generic_comm_base = ctx->pcc_comm_addr; > @@ -690,9 +699,8 @@ static int xgene_hwmon_probe(struct platform_device *pdev) > */ > ctx->comm_base_addr = cppc_ss->base_address; > if (ctx->comm_base_addr) { > - ctx->pcc_comm_addr = memremap(ctx->comm_base_addr, > - cppc_ss->length, > - MEMREMAP_WB); > + ctx->pcc_comm_addr = pcc_ioremap(ctx->comm_base_addr, > + cppc_ss->length); > } else { > dev_err(&pdev->dev, "Failed to get PCC comm region\n"); > rc = -ENODEV; -- To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html