diff options
| author | Arvind Yadav <arvind.yadav.cs@gmail.com> | 2017-06-19 12:51:36 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-07-03 02:39:31 +0300 |
| commit | 40aa52c46288ebe37117bea84b1da8edb38e8604 (patch) | |
| tree | bc11e3d2080900696eee505a1762000f460d382e /drivers/pci/dwc | |
| parent | 27fce382a809064c0e23154433ce56ec2124dafa (diff) | |
| download | linux-40aa52c46288ebe37117bea84b1da8edb38e8604.tar.xz | |
PCI: dwc: dra7xx: Use RW1C for IRQSTATUS_MSI and IRQSTATUS_MAIN
Previously, we tried to clear interrupt requests by clearing bits in the
PCIECTRL_DRA7XX_CONF_IRQSTATUS_MSI and PCIECTRL_DRA7XX_CONF_IRQSTATUS_MAIN
registers. But per the TRM, these fields are RW1C, so we must *set* bits
to clear the interrupt bits.
Fixes: 47ff3de911a7 ("PCI: dra7xx: Add TI DRA7xx PCIe driver")
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
[bhelgaas: changelog]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/pci/dwc')
| -rw-r--r-- | drivers/pci/dwc/pci-dra7xx.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c index 8decf46cf525..668dc15ef2a4 100644 --- a/drivers/pci/dwc/pci-dra7xx.c +++ b/drivers/pci/dwc/pci-dra7xx.c @@ -174,7 +174,7 @@ static int dra7xx_pcie_establish_link(struct dw_pcie *pci) static void dra7xx_pcie_enable_msi_interrupts(struct dra7xx_pcie *dra7xx) { dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MSI, - ~LEG_EP_INTERRUPTS & ~MSI); + LEG_EP_INTERRUPTS | MSI); dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MSI, @@ -184,7 +184,7 @@ static void dra7xx_pcie_enable_msi_interrupts(struct dra7xx_pcie *dra7xx) static void dra7xx_pcie_enable_wrapper_interrupts(struct dra7xx_pcie *dra7xx) { dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MAIN, - ~INTERRUPTS); + INTERRUPTS); dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MAIN, INTERRUPTS); } |