drm/omap: pll: fix iteration loop check

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If the PLL calc function is given bad parameters, n_start/m_start may be
higher than n_stop/m_stop, which leads to the loops iterating through
the whole u32 number space.

Fix this by failing early on such cases.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-59-tomi.valkeinen@ti.com

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Tomi Valkeinen 2020-12-15 12:46:31 +02:00

parent 0073b8cd43

commit 4119bd55e4

1 changed files with 6 additions and 0 deletions

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drivers/gpu/drm/omapdrm/dss/pll.c

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