On Wed, Oct 8, 2014 at 12:04 PM, Paul Gortmaker
<[email protected]> wrote:
> From: Ong Boon Leong <[email protected]>
>
> As of merge 60a9d9fc565e4503dbb8705803e83d906afc4ad2, "Merge
> tag 'v3.10.48' into standard/base" the 8250_dw.c fails to
> compile due to an undeclared variable.
>
> This happens because stable brought in:
>
>  -------------------------
>  commit 6d5e79331417886196cb3a733bdb6645ba85bc42
>  Author: Tim Kryger <[email protected]>
>  Date:   Tue Oct 1 10:18:08 2013 -0700
>
>     serial: 8250_dw: Improve unwritable LCR workaround
>
>     commit c49436b657d0a56a6ad90d14a7c3041add7cf64d upstream.
>
>  [...]
>
>     [wangnan: backport to 3.10.43:
>       - adjust context
>       - remove unneeded local var]
>     Signed-off-by: Wang Nan <[email protected]>
>     Signed-off-by: Greg Kroah-Hartman <[email protected]>
>  ------------------------
>
> ...which deletes the p->private_data declaration since it became
> unused at that point, however in Yocto, we also have this:
>
>  -----------------------
>  commit 0e02b050c3cafbcbf9952125089a27e02d6ecea9
>  Author: David Daney <[email protected]>
>  Date:   Wed Jun 19 20:37:27 2013 +0000
>
>     tty/8250_dw: Add support for OCTEON UARTS.
>
>  [...]
>
>     Signed-off-by: Ralf Baechle <[email protected]>
>     (cherry picked from commit d5f1af7ece96cf52e0b110c72210ac15c2f65438)
>     Signed-off-by: Darren Hart <[email protected]>
>  -----------------------
>
> ...which _adds_ another user of the p->private_data.
>
> Here we restore the declaration in order that 8250_dw compiles.
>
> Signed-off-by: Ong Boon Leong <[email protected]>
> [PG: add root cause info to commit log.]


Looks good. I'll merge this tomorrow night, when i'm finally back in front of
a real computer.

Cheers,

Bruce

> Signed-off-by: Paul Gortmaker <[email protected]>
>
> diff --git a/drivers/tty/serial/8250/8250_dw.c 
> b/drivers/tty/serial/8250/8250_dw.c
> index 36fe9d9262c0..5caf10ee14b1 100644
> --- a/drivers/tty/serial/8250/8250_dw.c
> +++ b/drivers/tty/serial/8250/8250_dw.c
> @@ -217,6 +217,7 @@ static unsigned int dw8250_serial_in32(struct uart_port 
> *p, int offset)
>
>  static int dw8250_handle_irq(struct uart_port *p)
>  {
> +       struct dw8250_data *d = p->private_data;
>         unsigned int iir = p->serial_in(p, UART_IIR);
>
>         if (serial8250_handle_irq(p, iir)) {
> --
> 2.1.0
>
> --
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> linux-yocto mailing list
> [email protected]
> https://lists.yoctoproject.org/listinfo/linux-yocto



-- 
"Thou shalt not follow the NULL pointer, for chaos and madness await
thee at its end"
-- 
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