5.4-stable review patch. If anyone has any objections, please let me know.
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From: Gu Bowen gubowen5@huawei.com
commit e51a349d2dcf1df8422dabb90b2f691dc7df6f92 upstream.
The error path when atmci_configure_dma() set dma fails in atmci driver does not correctly disable the clock. Add the missing clk_disable_unprepare() to the error path for pair with clk_prepare_enable().
Fixes: 467e081d23e6 ("mmc: atmel-mci: use probe deferring if dma controller is not ready yet") Signed-off-by: Gu Bowen gubowen5@huawei.com Acked-by: Aubin Constans aubin.constans@microchip.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20250225022856.3452240-1-gubowen5@huawei.com Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mmc/host/atmel-mci.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -2502,8 +2502,10 @@ static int atmci_probe(struct platform_d /* Get MCI capabilities and set operations according to it */ atmci_get_cap(host); ret = atmci_configure_dma(host); - if (ret == -EPROBE_DEFER) + if (ret == -EPROBE_DEFER) { + clk_disable_unprepare(host->mck); goto err_dma_probe_defer; + } if (ret == 0) { host->prepare_data = &atmci_prepare_data_dma; host->submit_data = &atmci_submit_data_dma;