Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 386/421] um: fix error return code in winch_tramp() | Date | Mon, 19 Jul 2021 16:53:17 +0200 |
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From: Zhen Lei <thunder.leizhen@huawei.com>
[ Upstream commit ccf1236ecac476d9d2704866d9a476c86e387971 ]
Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function.
Fixes: 89df6bfc0405 ("uml: DEBUG_SHIRQ fixes") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Acked-By: anton.ivanov@cambridgegreys.com Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Sasha Levin <sashal@kernel.org> --- arch/um/drivers/chan_user.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c index 9cffbbb15c56..669124d5290b 100644 --- a/arch/um/drivers/chan_user.c +++ b/arch/um/drivers/chan_user.c @@ -256,7 +256,8 @@ static int winch_tramp(int fd, struct tty_port *port, int *fd_out, goto out_close; } - if (os_set_fd_block(*fd_out, 0)) { + err = os_set_fd_block(*fd_out, 0); + if (err) { printk(UM_KERN_ERR "winch_tramp: failed to set thread_fd " "non-blocking.\n"); goto out_close; -- 2.30.2
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