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watchdog: diag288_wdt: fix __diag288() inline assembly

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commit 32e40f9506b9e32917eb73154f93037b443124d1 upstream.

The DIAG 288 statement consumes an EBCDIC string the address of which is
passed in a register. Use a "memory" clobber to tell the compiler that
memory is accessed within the inline assembly.

Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Egorenkov 2023-01-27 14:52:42 +01:00 committed by Greg Kroah-Hartman
parent 78e55b52b2
commit f6ea834e8d
1 changed files with 1 additions and 1 deletions
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drivers/watchdog/diag288_wdt.c
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@ -86,7 +86,7 @@ static int __diag288(unsigned int func, unsigned int timeout,
"1:\n"
EX_TABLE(0b, 1b)
: "+d" (err) : "d"(__func), "d"(__timeout),
"d"(__action), "d"(__len) : "1", "cc");
"d"(__action), "d"(__len) : "1", "cc", "memory");
return err;
}