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Commit 9fbe0208 authored by Jiaxun Yang's avatar Jiaxun Yang Committed by Greg Kroah-Hartman
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MIPS: jump_label: Fix compat branch range check 



commit 64ac0befe75bdfaffc396c2b4a0ed5ae6920eeee upstream.

Cast upper bound of branch range to long to do signed compare,
avoid negative offset trigger this warning.

Fixes: 9b6584e3 ("MIPS: jump_label: Use compact branches for >= r6")
Signed-off-by: default avatarJiaxun Yang <jiaxun.yang@flygoat.com>
Cc: stable@vger.kernel.org
Reviewed-by: default avatarPhilippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f967bbc7

arch/mips/kernel/jump_label.c

+1 −1
Original line number Diff line number Diff line
@@ -56,7 +56,7 @@ void arch_jump_label_transform(struct jump_entry *e, 
			 * The branch offset must fit in the instruction's 26

			 * bit field.

			 */

			WARN_ON((offset >= BIT(25)) ||

			WARN_ON((offset >= (long)BIT(25)) ||

				(offset < -(long)BIT(25)));



			insn.j_format.opcode = bc6_op;