I missed that one on the mailing list. It is the same fix,
or part of it anyway.
Ben
On Wed, 2014-01-22 at 01:01 +0100, Luka Perkov wrote:
> On Tue, Jan 21, 2014 at 08:50:03PM +0100, Ben Mulvihill wrote:
> > Any enlightenment you can provide will be gratefully received.
>
> I have not tested this patch yet but it could be related to your
> problem...
>
> Luka
>
>
> From ad77bb90cbebcd107e81722e1fbdcff91fe55614 Mon Sep 17 00:00:00 2001
> From: Antonios Vamporakis <a...@area128.com>
> Date: Sun, 29 Dec 2013 23:40:15 +0100
> Subject: [PATCH 03/14] lantiq: resolve EBU conflict between NAND and PCI
>
> Stop PCI IRQs from taking over the EBU wile NAND is accessed.
>
> Signed-off-by: Antonios Vamporakis <a...@area128.com>
> ---
> .../0203-xway-fix-nand-pci-conflict.patch | 19
> +++++++++++++++++++
> 1 file changed, 19 insertions(+)
> create mode 100644
> target/linux/lantiq/patches-3.10/0203-xway-fix-nand-pci-conflict.patch
>
> diff --git
> a/target/linux/lantiq/patches-3.10/0203-xway-fix-nand-pci-conflict.patch
> b/target/linux/lantiq/patches-3.10/0203-xway-fix-nand-pci-conflict.patch
> new file mode 100644
> index 0000000..f4b5793
> --- /dev/null
> +++ b/target/linux/lantiq/patches-3.10/0203-xway-fix-nand-pci-conflict.patch
> @@ -0,0 +1,19 @@
> +--- a/drivers/mtd/nand/xway_nand.c
> ++++ b/drivers/mtd/nand/xway_nand.c
> +@@ -80,13 +80,16 @@ static void xway_reset_chip(struct nand_
> +
> + static void xway_select_chip(struct mtd_info *mtd, int chip)
> + {
> ++ static unsigned long csflags;
> +
> + switch (chip) {
> + case -1:
> + ltq_ebu_w32_mask(NAND_CON_CE, 0, EBU_NAND_CON);
> + ltq_ebu_w32_mask(NAND_CON_NANDM, 0, EBU_NAND_CON);
> ++ spin_unlock_irqrestore(&ebu_lock, csflags);
> + break;
> + case 0:
> ++ spin_lock_irqsave(&ebu_lock, csflags);
> + ltq_ebu_w32_mask(0, NAND_CON_NANDM, EBU_NAND_CON);
> + ltq_ebu_w32_mask(0, NAND_CON_CE, EBU_NAND_CON);
> + break;
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