ASoC: Intel: avs: Fix theoretical infinite loop

BugLink: https://bugs.launchpad.net/bugs/2103829

[ Upstream commit cf4d742 ]

While 'stack_dump_size' is a u32 bitfield of 16 bits, u32 has a bigger
upper bound than the type u16 of loop counter 'offset' what in theory
may lead to infinite loop condition.

Found out by Coverity static analyzer.

Fixes: c8c960c ("ASoC: Intel: avs: APL-based platforms support")
Signed-off-by: Cezary Rojewski <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
Signed-off-by: Noah Wager <[email protected]>
Signed-off-by: Mehmet Basaran <[email protected]>

Author: crojewsk-intel

sound/soc/intel/avs/apl.c

@@ -125,7 +125,7 @@ int avs_apl_coredump(struct avs_dev *adev, union avs_notify_msg *msg)
 	struct avs_apl_log_buffer_layout layout;
 	void __iomem *addr, *buf;
 	size_t dump_size;
-	u16 offset = 0;
+	u32 offset = 0;
 	u8 *dump, *pos;
 
 	dump_size = AVS_FW_REGS_SIZE + msg->ext.coredump.stack_dump_size;