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m68k: mac: Don't send uninitialized data in IOP message reply 

Clear the message reply before calling iop_complete(). This code path is
not normally executed but should that happen let's arrange for consistent
behaviour from the IOP.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Tested-by: Stan Johnson <userm57@yahoo.com>
Cc: Joshua Thompson <funaho@jurai.org>
Link: https://lore.kernel.org/r/8e35df4d193b082cb6285b1f30c949ff7e30e99e.1590880333.git.fthain@telegraphics.com.au
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Finn Thain 2020-05-31 09:12:13 +10:00 committed by Geert Uytterhoeven
parent 931fc82a6a
commit adc19b2e31
1 changed files with 1 additions and 0 deletions
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arch/m68k/mac/iop.c
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@ -449,6 +449,7 @@ static void iop_handle_recv(uint iop_num, uint chan)
iop_pr_debug("unclaimed message on iop_num %d chan %d\n",
iop_num, chan);
iop_pr_debug("%*ph\n", IOP_MSG_LEN, msg->message);
memset(msg->reply, 0, IOP_MSG_LEN);
iop_complete_message(msg);
}
}