On Thursday, October 12, 2017 3:55 AM, Pankaj Dubey wrote: > > In pcie-designware.c many places we are calling "usleep_range" which > are in atomic context. This patch fixes these potential BUGs and > replaces "usleep_range" with mdelay calls. > > Signed-off-by: Pankaj Dubey <pankaj.dubey@xxxxxxxxxxx> Sorry for my late response. Acked-by: Jingoo Han <jingoohan1@xxxxxxxxx> Best regards, Jingoo Han > --- > drivers/pci/dwc/pcie-designware.c | 8 ++++---- > drivers/pci/dwc/pcie-designware.h | 3 +-- > 2 files changed, 5 insertions(+), 6 deletions(-) > > diff --git a/drivers/pci/dwc/pcie-designware.c b/drivers/pci/dwc/pcie- > designware.c > index 88abddd..35d19b9 100644 > --- a/drivers/pci/dwc/pcie-designware.c > +++ b/drivers/pci/dwc/pcie-designware.c > @@ -138,7 +138,7 @@ static void dw_pcie_prog_outbound_atu_unroll(struct > dw_pcie *pci, int index, > if (val & PCIE_ATU_ENABLE) > return; > > - usleep_range(LINK_WAIT_IATU_MIN, LINK_WAIT_IATU_MAX); > + mdelay(LINK_WAIT_IATU_MIN); > } > dev_err(pci->dev, "outbound iATU is not being enabled\n"); > } > @@ -181,7 +181,7 @@ void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, > int index, int type, > if (val & PCIE_ATU_ENABLE) > return; > > - usleep_range(LINK_WAIT_IATU_MIN, LINK_WAIT_IATU_MAX); > + mdelay(LINK_WAIT_IATU_MIN); > } > dev_err(pci->dev, "outbound iATU is not being enabled\n"); > } > @@ -239,7 +239,7 @@ static int dw_pcie_prog_inbound_atu_unroll(struct > dw_pcie *pci, int index, > if (val & PCIE_ATU_ENABLE) > return 0; > > - usleep_range(LINK_WAIT_IATU_MIN, LINK_WAIT_IATU_MAX); > + mdelay(LINK_WAIT_IATU_MIN); > } > dev_err(pci->dev, "inbound iATU is not being enabled\n"); > > @@ -285,7 +285,7 @@ int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, int > index, int bar, > if (val & PCIE_ATU_ENABLE) > return 0; > > - usleep_range(LINK_WAIT_IATU_MIN, LINK_WAIT_IATU_MAX); > + mdelay(LINK_WAIT_IATU_MIN); > } > dev_err(pci->dev, "inbound iATU is not being enabled\n"); > > diff --git a/drivers/pci/dwc/pcie-designware.h b/drivers/pci/dwc/pcie- > designware.h > index e5d9d77..13c17c9 100644 > --- a/drivers/pci/dwc/pcie-designware.h > +++ b/drivers/pci/dwc/pcie-designware.h > @@ -28,8 +28,7 @@ > > /* Parameters for the waiting for iATU enabled routine */ > #define LINK_WAIT_MAX_IATU_RETRIES 5 > -#define LINK_WAIT_IATU_MIN 9000 > -#define LINK_WAIT_IATU_MAX 10000 > +#define LINK_WAIT_IATU_MIN 9 > > /* Synopsys-specific PCIe configuration registers */ > #define PCIE_PORT_LINK_CONTROL 0x710 > -- > 2.7.4
