Commit 53fc7e80 authored by Shuai Xue's avatar Shuai Xue Committed by Rafael J. Wysocki
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ACPI: APEI: EINJ: Limit error type to 32-bit width 



The bit map of error types to inject is 32-bit width [1].

Add parameter check to reflect the fact.

[1] ACPI Specification 6.4, Section 18.6.4. Error Types

Signed-off-by: default avatarShuai Xue <xueshuai@linux.alibaba.com>
Reviewed-by: default avatarTony Luck <tony.luck@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 6d796c50

drivers/acpi/apei/einj.c

+4 −0
Original line number Diff line number Diff line
@@ -616,6 +616,10 @@ static int error_type_set(void *data, u64 val) 
	u32 available_error_type = 0;

	u32 tval, vendor;



	/* Only low 32 bits for error type are valid */

	if (val & GENMASK_ULL(63, 32))

		return -EINVAL;



	/*

	 * Vendor defined types have 0x80000000 bit set, and

	 * are not enumerated by ACPI_EINJ_GET_ERROR_TYPE