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The CCI ports programming interface is available to the kernel only when booted in secure mode (or when firmware enables non-secure access to override CCI ports control). In both cases, firmware reports the CCI ports availability through the device tree CCI ports nodes, which must be parsed and their status checked by the kernel probing path. This check is currently missing and may cause the kernel to erroneously believe it is free to take control of CCI ports where in practice CCI ports control is forbidden. Add the missing CCI port availability check to the CCI driver in order to guarantee sane CCI usage. Cc: Liviu Dudau <liviu.dudau@arm.com> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> |
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| .. | ||
| arm-cci.c | ||
| arm-ccn.c | ||
| brcmstb_gisb.c | ||
| imx-weim.c | ||
| Kconfig | ||
| Makefile | ||
| mips_cdmm.c | ||
| mvebu-mbus.c | ||
| omap_l3_noc.c | ||
| omap_l3_noc.h | ||
| omap_l3_smx.c | ||
| omap_l3_smx.h | ||
| omap-ocp2scp.c | ||
| qcom-ebi2.c | ||
| simple-pm-bus.c | ||
| sunxi-rsb.c | ||
| tegra-aconnect.c | ||
| uniphier-system-bus.c | ||
| vexpress-config.c | ||