diff options
| author | Laurentiu Tudor <laurentiu.tudor@nxp.com> | 2020-09-14 13:54:59 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-02 13:25:32 +0200 |
| commit | aef85b56c3c1693571940ebaee986c26a2dab99b (patch) | |
| tree | 863edfe0f0fe7e2741dab1951d3659963f1f7c24 /drivers/bus/fsl-mc | |
| parent | 3b844345e18042631a0f061d1f35045f2de74347 (diff) | |
bus: fsl-mc: MC control registers are not always available
As per the device tree binding, in certain scenarios such as
virtualization scenarios, the MC control registers are not
available so don't error out if they are not present.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Link: https://lore.kernel.org/r/20200914105459.27448-2-laurentiu.tudor@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/bus/fsl-mc')
| -rw-r--r-- | drivers/bus/fsl-mc/fsl-mc-bus.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c index b0449df117e8..7345ecef93f8 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -915,11 +915,11 @@ static int fsl_mc_bus_probe(struct platform_device *pdev) platform_set_drvdata(pdev, mc); plat_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - mc->fsl_mc_regs = devm_ioremap_resource(&pdev->dev, plat_res); - if (IS_ERR(mc->fsl_mc_regs)) - return PTR_ERR(mc->fsl_mc_regs); + if (plat_res) + mc->fsl_mc_regs = devm_ioremap_resource(&pdev->dev, plat_res); - if (IS_ENABLED(CONFIG_ACPI) && !dev_of_node(&pdev->dev)) { + if (mc->fsl_mc_regs && IS_ENABLED(CONFIG_ACPI) && + !dev_of_node(&pdev->dev)) { mc_stream_id = readl(mc->fsl_mc_regs + FSL_MC_FAPR); /* * HW ORs the PL and BMT bit, places the result in bit 15 of |