Commit a552f204 authored Dec 03, 2020 by Srinivas Pandruvada Committed by Hans de Goede Dec 07, 2020

platform/x86: ISST: Check for unaligned mmio address



The address should be aligned to 4 byte boundary. So send an error for
unaligned address.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20201204015746.1168941-1-srinivas.pandruvada@linux.intel.com


Signed-off-by: Hans de Goede <hdegoede@redhat.com>

parent 8b105ef6

drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -42,6 +42,9 @@ static long isst_if_mmio_rd_wr(u8 cmd_ptr, int write_only, int resume)
		if (io_reg->reg < 0x04 \|\| io_reg->reg > 0xD0)
		return -EINVAL;

		if (io_reg->reg % 4)
		return -EINVAL;

		if (io_reg->read_write && !capable(CAP_SYS_ADMIN))
		return -EPERM;

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