Messages in this thread Patch in this message | | | From | Lad Prabhakar <> | Subject | [PATCH v5 3/7] PCI: rcar: Fix calculating mask for PCIEPAMR register | Date | Fri, 28 Feb 2020 15:41:18 +0000 |
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The mask value was calculated incorrectly for PCIEPAMR register if the size was less than 128 bytes. Fix this issue by adding a check on size.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> --- drivers/pci/controller/pcie-rcar.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/controller/pcie-rcar.c b/drivers/pci/controller/pcie-rcar.c index 41275f9..90d47b21 100644 --- a/drivers/pci/controller/pcie-rcar.c +++ b/drivers/pci/controller/pcie-rcar.c @@ -75,7 +75,10 @@ void rcar_pcie_set_outbound(int win, void __iomem *base, * keeps things pretty simple. */ size = resource_size(res); - mask = (roundup_pow_of_two(size) / SZ_128) - 1; + if (size > 128) + mask = (roundup_pow_of_two(size) / SZ_128) - 1; + else + mask = 0x0; rcar_pci_write_reg(base, mask << 7, PCIEPAMR(win)); if (res->flags & IORESOURCE_IO) -- 2.7.4
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