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Commit ab3ab7b6 authored by Linus Walleij's avatar Linus Walleij Committed by Miquel Raynal
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mtd: rawnand: fsmc: Disable NAND on remove() 



This disables the NAND on remove() and the errorpath,
making sure the chipselect gets deasserted when the
NAND is not in use.

Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
parent 30c72ab1

drivers/mtd/nand/raw/fsmc_nand.c

+15 −0
Original line number Diff line number Diff line
@@ -986,6 +986,19 @@ static const struct nand_controller_ops fsmc_nand_controller_ops = { 
	.setup_data_interface = fsmc_setup_data_interface,

};



/**

 * fsmc_nand_disable() - Disables the NAND bank

 * @host: The instance to disable

 */

static void fsmc_nand_disable(struct fsmc_nand_data *host)

{

	u32 val;



	val = readl(host->regs_va + FSMC_PC);

	val &= ~FSMC_ENABLE;

	writel(val, host->regs_va + FSMC_PC);

}



/*

 * fsmc_nand_probe - Probe function

 * @pdev:       platform device structure
@@ -1141,6 +1154,7 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) 
	if (host->mode == USE_DMA_ACCESS)

		dma_release_channel(host->read_dma_chan);

disable_clk:

	fsmc_nand_disable(host);

	clk_disable_unprepare(host->clk);



	return ret;
@@ -1155,6 +1169,7 @@ static int fsmc_nand_remove(struct platform_device *pdev) 


	if (host) {

		nand_release(&host->nand);

		fsmc_nand_disable(host);



		if (host->mode == USE_DMA_ACCESS) {

			dma_release_channel(host->write_dma_chan);