[PATCH] mtd: rawnand: brcmnand: Propagate errors from optional IRQ lookup

[PATCH] mtd: rawnand: brcmnand: Propagate errors from optional IRQ lookup

[phucduc.bui]

From: bui duc phuc <phucduc.bui@gmail.com>

platform_get_irq_optional() returns a positive IRQ number on success or
a negative error code on failure. For an optional IRQ, -ENXIO indicates
that no optional IRQ is available, in which case the driver falls back
to using the ctlrdy IRQ. Other errors should be propagated so that the
caller can handle them appropriately.

Treat -ENXIO as the only case where the driver falls back to the ctlrdy
IRQ, and propagate all other errors returned by
platform_get_irq_optional().

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 drivers/mtd/nand/raw/brcmnand/brcmnand.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
index 5b9dadd5405e..4a1f5e736a1c 100644
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -3272,6 +3272,8 @@ static int brcmnand_edu_setup(struct platform_device *pdev)
 
 		ctrl->edu_irq = platform_get_irq_optional(pdev, 1);
 		if (ctrl->edu_irq < 0) {
+			if (ctrl->edu_irq != -ENXIO)
+				return ctrl->edu_irq;
 			dev_warn(dev,
 				 "FLASH EDU enabled, using ctlrdy irq\n");
 		} else {
-- 
2.43.0

Re: [PATCH] mtd: rawnand: brcmnand: Propagate errors from optional IRQ lookup

[Miquel Raynal]

On Wed, 12 Aug 2026 17:37:28 +0700, phucduc.bui@gmail.com wrote:
> platform_get_irq_optional() returns a positive IRQ number on success or
> a negative error code on failure. For an optional IRQ, -ENXIO indicates
> that no optional IRQ is available, in which case the driver falls back
> to using the ctlrdy IRQ. Other errors should be propagated so that the
> caller can handle them appropriately.
> 
> Treat -ENXIO as the only case where the driver falls back to the ctlrdy
> IRQ, and propagate all other errors returned by
> platform_get_irq_optional().
> 
> [...]

Applied to nand/next, thanks!

[1/1] mtd: rawnand: brcmnand: Propagate errors from optional IRQ lookup
      commit: c9e20e213bb051d02711155de0dc4759de2faddf

Patche(s) should be available on mtd/linux.git and will be
part of the next PR (provided that no robot complains by then).

Kind regards,
Miquèl