Commit 32826368 authored by Lad Prabhakar's avatar Lad Prabhakar Committed by Lorenzo Pieralisi
Browse files

PCI: rcar: Fix calculating mask for PCIEPAMR register 

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.

Link: https://lore.kernel.org/r/1588854799-13710-4-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com


Signed-off-by: default avatarLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
parent 78a0d7f2

drivers/pci/controller/pcie-rcar.c

+4 −1
Original line number Diff line number Diff line
@@ -76,7 +76,10 @@ void rcar_pcie_set_outbound(struct rcar_pcie *pcie, int win, 
	 * keeps things pretty simple.

	 */

	size = resource_size(res);

	if (size > 128)

		mask = (roundup_pow_of_two(size) / SZ_128) - 1;

	else

		mask = 0x0;

	rcar_pci_write_reg(pcie, mask << 7, PCIEPAMR(win));



	if (res->flags & IORESOURCE_IO)