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PCI: rcar: Fix calculating mask for PCIEPAMR register

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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.

Link: https://lore.kernel.org/r/1588854799-13710-4-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
This commit is contained in:
Lad Prabhakar 2020-05-07 13:33:14 +01:00 committed by Lorenzo Pieralisi
parent 78a0d7f2f5
commit 3282636871
1 changed files with 4 additions and 1 deletions
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5
drivers/pci/controller/pcie-rcar.c
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@ -76,7 +76,10 @@ void rcar_pcie_set_outbound(struct rcar_pcie *pcie, int win,
* 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(pcie, mask << 7, PCIEPAMR(win));
if (res->flags & IORESOURCE_IO)