5.15-stable review patch. If anyone has any objections, please let me know.
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From: Maciej Andrzejewski maciej.andrzejewski@m-works.net
commit 11e6831fd81468cf48155b9b3c11295c391da723 upstream.
The NAND chip-selects are registered for the Arasan driver during initialization but are not de-registered when the driver is unloaded. As a result, if the driver is loaded again, the chip-selects remain registered and busy, making them unavailable for use.
Fixes: 197b88fecc50 ("mtd: rawnand: arasan: Add new Arasan NAND controller") Cc: stable@vger.kernel.org Signed-off-by: Maciej Andrzejewski ICEYE maciej.andrzejewski@m-works.net Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mtd/nand/raw/arasan-nand-controller.c | 7 +++++++ 1 file changed, 7 insertions(+)
--- a/drivers/mtd/nand/raw/arasan-nand-controller.c +++ b/drivers/mtd/nand/raw/arasan-nand-controller.c @@ -1510,8 +1510,15 @@ disable_controller_clk:
static int anfc_remove(struct platform_device *pdev) { + int i; struct arasan_nfc *nfc = platform_get_drvdata(pdev);
+ for (i = 0; i < nfc->ncs; i++) { + if (nfc->cs_array[i]) { + gpiod_put(nfc->cs_array[i]); + } + } + anfc_chips_cleanup(nfc);
clk_disable_unprepare(nfc->bus_clk);