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Date: Mon, 19 Jul 2021 16:54:09 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Hulk Robot <hulkci@...wei.com>, Zhen Lei <thunder.leizhen@...wei.com>, anton.ivanov@...bridgegreys.com, Richard Weinberger <richard@....at>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 5.12 187/292] um: fix error return code in winch_tramp() From: Zhen Lei <thunder.leizhen@...wei.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@...wei.com> Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com> Acked-By: anton.ivanov@...bridgegreys.com Signed-off-by: Richard Weinberger <richard@....at> Signed-off-by: Sasha Levin <sashal@...nel.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 d8845d4aac6a..6040817c036f 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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