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Date: Tue, 3 Mar 2020 18:43:43 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Christophe JAILLET <christophe.jaillet@...adoo.fr>, Jiri Kosina <jkosina@...e.cz> Subject: [PATCH 4.19 52/87] HID: alps: Fix an error handling path in alps_input_configured() From: Christophe JAILLET <christophe.jaillet@...adoo.fr> commit 8d2e77b39b8fecb794e19cd006a12f90b14dd077 upstream. They are issues: - if 'input_allocate_device()' fails and return NULL, there is no need to free anything and 'input_free_device()' call is a no-op. It can be axed. - 'ret' is known to be 0 at this point, so we must set it to a meaningful value before returning Fixes: 2562756dde55 ("HID: add Alps I2C HID Touchpad-Stick support") Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr> Signed-off-by: Jiri Kosina <jkosina@...e.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/hid/hid-alps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/hid/hid-alps.c +++ b/drivers/hid/hid-alps.c @@ -734,7 +734,7 @@ static int alps_input_configured(struct if (data->has_sp) { input2 = input_allocate_device(); if (!input2) { - input_free_device(input2); + ret = -ENOMEM; goto exit; }
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