4.18-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold johan@kernel.org
commit f294d00961d1d869ecffa60e280eeeee1ccf9a49 upstream.
Make sure to disable clocks and deregister any exported partitions before returning on late probe errors.
Note that since commit ee895ccdf776 ("misc: sram: fix enabled clock leak on error path"), partitions are deliberately exported before enabling the clock so we stick to that logic here. A follow up patch will address this.
Cc: stable stable@vger.kernel.org # 4.9 Cc: Alexandre Belloni alexandre.belloni@free-electrons.com Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/misc/sram.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
--- a/drivers/misc/sram.c +++ b/drivers/misc/sram.c @@ -407,13 +407,20 @@ static int sram_probe(struct platform_de if (init_func) { ret = init_func(); if (ret) - return ret; + goto err_disable_clk; }
dev_dbg(sram->dev, "SRAM pool: %zu KiB @ 0x%p\n", gen_pool_size(sram->pool) / 1024, sram->virt_base);
return 0; + +err_disable_clk: + if (sram->clk) + clk_disable_unprepare(sram->clk); + sram_free_partitions(sram); + + return ret; }
static int sram_remove(struct platform_device *pdev)