| Message ID | 20170308233748.54706-1-briannorris@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On 2017/3/9 7:37, Brian Norris wrote: > The regulator framework can return negative error codes via > regulator_get_current_limit() for regulators that don't provide current > information. The subsequent check for postive values isn't very useful, > if the variable is unsigned. > > Let's just match the signedness of the return value. > > Prevents error messages like this, seen on Samsung Chromebook Plus: > > [ 1.069372] rockchip-pcie f8000000.pcie: invalid power supply > For this patch, Acked-by: Shawn Lin <shawn.lin@rock-chips.com> And I think patch 2 is not so urgent so we could just wait for your non-WIP patch 3? > Fixes: 4816c4c7b82b ("PCI: rockchip: Provide captured slot power limit and scale") > Signed-off-by: Brian Norris <briannorris@chromium.org> > --- > v4.11 candidate? > > drivers/pci/host/pcie-rockchip.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c > index 26ddd3535272..d785f64ec03b 100644 > --- a/drivers/pci/host/pcie-rockchip.c > +++ b/drivers/pci/host/pcie-rockchip.c > @@ -425,7 +425,8 @@ static struct pci_ops rockchip_pcie_ops = { > > static void rockchip_pcie_set_power_limit(struct rockchip_pcie *rockchip) > { > - u32 status, curr, scale, power; > + int curr; > + u32 status, scale, power; > > if (IS_ERR(rockchip->vpcie3v3)) > return; >
On Thu, Mar 09, 2017 at 04:59:15PM +0800, Shawn Lin wrote: > On 2017/3/9 7:37, Brian Norris wrote: > >The regulator framework can return negative error codes via > >regulator_get_current_limit() for regulators that don't provide current > >information. The subsequent check for postive values isn't very useful, > >if the variable is unsigned. > > > >Let's just match the signedness of the return value. > > > >Prevents error messages like this, seen on Samsung Chromebook Plus: > > > >[ 1.069372] rockchip-pcie f8000000.pcie: invalid power supply > > > > For this patch, > > Acked-by: Shawn Lin <shawn.lin@rock-chips.com> Thanks. > And I think patch 2 is not so urgent so we could just wait for your > non-WIP patch 3? Sure. I'll be resending the series with a proper patch 3 (and 4 and 5 actually) soon anyway. No changes to the first 2. Brian
diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c index 26ddd3535272..d785f64ec03b 100644 --- a/drivers/pci/host/pcie-rockchip.c +++ b/drivers/pci/host/pcie-rockchip.c @@ -425,7 +425,8 @@ static struct pci_ops rockchip_pcie_ops = { static void rockchip_pcie_set_power_limit(struct rockchip_pcie *rockchip) { - u32 status, curr, scale, power; + int curr; + u32 status, scale, power; if (IS_ERR(rockchip->vpcie3v3)) return;
The regulator framework can return negative error codes via regulator_get_current_limit() for regulators that don't provide current information. The subsequent check for postive values isn't very useful, if the variable is unsigned. Let's just match the signedness of the return value. Prevents error messages like this, seen on Samsung Chromebook Plus: [ 1.069372] rockchip-pcie f8000000.pcie: invalid power supply Fixes: 4816c4c7b82b ("PCI: rockchip: Provide captured slot power limit and scale") Signed-off-by: Brian Norris <briannorris@chromium.org> --- v4.11 candidate? drivers/pci/host/pcie-rockchip.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)