[PATCH] clk: tenstorrent: Fix refcount leak on shared gate clk enable failure

[Drew Fustini]

On Thu, Sep 24, 2026 at 07:09:33PM -0700, Drew Fustini wrote:
> On Thu, Sep 24, 2026 at 10:31:51AM -0500, Anirudh Srinivasan wrote:
> > atlantis_clk_gate_shared_enable() increments the refcount for the number
> > of clks requesting the shared gate clk to be enabled always. It should
> > only do this when the enable for the gate took effect in hardware. It's
> > possible to end up in a situation where the gate enable failed, but the
> > refcount is incremented anyway, so subsequent requests by other clks
> > that share the same refcount get ignored and the gate enable is never
> > retried.
> > 
> > Update this function so that the refcount is not incremented when the
> > gate clk enable fails in hardware.
> > 
> > Reported-by: Sashiko <sashiko-bot at kernel.org>
> > Link: https://sashiko.dev/#/patchset/AS8P251MB00013BD9A093C06D2D60E10EC8B42%40AS8P251MB0001.EURP251.PROD.OUTLOOK.COM
> > Fixes: 23c8ebc95284 ("clk: tenstorrent: Add Atlantis clock controller driver")
> > Signed-off-by: Anirudh Srinivasan <asrinivasan at oss.tenstorrent.com>
> > ---
> >  drivers/clk/tenstorrent/atlantis-prcm.c | 19 +++++++++----------
> >  1 file changed, 9 insertions(+), 10 deletions(-)
> 
> Reviewed-by: Drew Fustini (Tenstorrent) <fustini at kernel.org>
> 
> I will apply this to tenstorrent-clk-for-next.

Applied to tenstorrent-clk-for-next:

  3f0655b51eb0 clk: tenstorrent: Fix refcount leak on shared gate clk enable failure

Thanks,
Drew