diff options
| author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2020-05-07 13:33:14 +0100 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2020-05-11 11:29:48 +0100 |
| commit | 328263687148bebf0d5daf5d06bcc2a46f3d7b0a (patch) | |
| tree | f63e84b8a07250c0a308d48a8ca3c08fb98b7a48 /drivers/pci/controller/pcie-rcar.c | |
| parent | 78a0d7f2f5a31357bce68012d886507b4cf33598 (diff) | |
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: 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>
Diffstat (limited to 'drivers/pci/controller/pcie-rcar.c')
| -rw-r--r-- | drivers/pci/controller/pcie-rcar.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/pci/controller/pcie-rcar.c b/drivers/pci/controller/pcie-rcar.c index cf8840d180c3..7583699ef7b6 100644 --- a/drivers/pci/controller/pcie-rcar.c +++ b/drivers/pci/controller/pcie-rcar.c @@ -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) |