From: niravkumar.l.rabara@intel.com
To: Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
Niravkumar L Rabara <niravkumar.l.rabara@intel.com>,
linux@treblig.org, Shen Lichuan <shenlichuan@vivo.com>,
Jinjie Ruan <ruanjinjie@huawei.com>,
u.kleine-koenig@baylibre.com, linux-mtd@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/3] mtd: rawnand: cadence: support deferred prob when DMA is not ready
Date: Wed, 8 Jan 2025 21:52:32 +0800 [thread overview]
Message-ID: <20250108135234.3107502-2-niravkumar.l.rabara@intel.com> (raw)
In-Reply-To: <20250108135234.3107502-1-niravkumar.l.rabara@intel.com>
From: Niravkumar L Rabara <niravkumar.l.rabara@intel.com>
Use deferred driver probe in case the DMA driver is not probed.
When ARM SMMU is enabled, all peripheral device drivers, including NAND,
are probed earlier than the DMA driver.
Signed-off-by: Niravkumar L Rabara <niravkumar.l.rabara@intel.com>
---
drivers/mtd/nand/raw/cadence-nand-controller.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/cadence-nand-controller.c b/drivers/mtd/nand/raw/cadence-nand-controller.c
index 8d1d710e439d..5e27f5546f1b 100644
--- a/drivers/mtd/nand/raw/cadence-nand-controller.c
+++ b/drivers/mtd/nand/raw/cadence-nand-controller.c
@@ -2908,7 +2908,7 @@ static int cadence_nand_init(struct cdns_nand_ctrl *cdns_ctrl)
if (!cdns_ctrl->dmac) {
dev_err(cdns_ctrl->dev,
"Unable to get a DMA channel\n");
- ret = -EBUSY;
+ ret = -EPROBE_DEFER;
goto disable_irq;
}
}
--
2.25.1
next prev parent reply other threads:[~2025-01-08 13:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-08 13:52 [PATCH 0/3] mtd: rawnand: cadence: improvement and fixes niravkumar.l.rabara
2025-01-08 13:52 ` niravkumar.l.rabara [this message]
2025-01-08 13:52 ` [PATCH 2/3] mtd: rawnand: cadence: use dma_map_resource for sdma address niravkumar.l.rabara
2025-01-08 13:52 ` [PATCH 3/3] mtd: rawnand: cadence: fix incorrect dev context in dma_unmap_single niravkumar.l.rabara
2025-01-15 19:05 ` [PATCH 0/3] mtd: rawnand: cadence: improvement and fixes Miquel Raynal
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