Re: [PATCH v3 1/3] mtd: rawnand: marvell: add suspend and resume hooks

[Miquel Raynal <miquel.raynal@bootlin.com>]

Hi Daniel,

Thanks for all the changes.

Daniel Mack <daniel@zonque.org> wrote on Sat,  7 Jul 2018 08:46:29
+0200:

> This patch restores the suspend and resume hooks that the old driver used
> to have. Apart from stopping and starting the clocks, the resume callback
> also nullifies the selected_chip pointer, so the next command that is issued
> will re-select the chip and thereby restore the timing registers.
> 
> Without this patch, a PXA3xx based system would cough up an error similar to
> the one below after resume.
> 
> [   44.660162] marvell-nfc 43100000.nand-controller: Timeout waiting for  RB signal
> [   44.671492] ubi0 error: ubi_io_write: error -110 while writing 2048 bytes to PEB 102:38912, written 0 bytes
> [   44.682887] CPU: 0 PID: 1417 Comm: remote-control Not tainted 4.18.0-rc2+ #344
> [   44.691197] Hardware name: Marvell PXA3xx (Device Tree Support)
> [   44.697111] Backtrace:
> [   44.699593] [<c0106458>] (dump_backtrace) from [<c0106718>] (show_stack+0x18/0x1c)
> [   44.708931]  r7:00000800 r6:00009800 r5:00000066 r4:c6139000
> [   44.715833] [<c0106700>] (show_stack) from [<c0678a60>] (dump_stack+0x20/0x28)
> [   44.724206] [<c0678a40>] (dump_stack) from [<c0456cbc>] (ubi_io_write+0x3d4/0x630)
> [   44.732925] [<c04568e8>] (ubi_io_write) from [<c0454428>] (ubi_eba_write_leb+0x690/0x6fc)
> ...
> 
> Signed-off-by: Daniel Mack <daniel@zonque.org>
> Fixes: 02f26ecf8c77 ("mtd: nand: add reworked Marvell NAND controller driver")
> Cc: stable@vger.kernel.org
> ---

Do you mind if I apply all the patches to nand/next? This fix will only
appear in mainline after the merge window (in a few weeks). Otherwise
I'll have to apply patches 2 and 3 for the next-next-release
(supposedly 4.20).

Thanks,
Miquèl