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drm/tve200: Fix handling of platform_get_irq() error
[ Upstream commit 77bb5aa ] platform_get_irq() returns -ERRNO on error. In such case comparison to 0 would pass the check. Fixes: 179c02f ("drm/tve200: Add new driver for TVE200") Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200827071107.27429-2-krzk@kernel.org Signed-off-by: Sasha Levin <sashal@kernel.org>
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