* [PATCH] firmware: fw_cfg register offsets on supported architectures only
@ 2016-02-22 21:18 Gabriel Somlo
2016-02-23 5:08 ` Michael S. Tsirkin
0 siblings, 1 reply; 2+ messages in thread
From: Gabriel Somlo @ 2016-02-22 21:18 UTC (permalink / raw)
To: Michael S. Tsirkin
Cc: gregkh, robh+dt, pawel.moll, mark.rutland, ijc+devicetree, galak,
arnd, lersek, ralf, rmk+kernel, eric, hanjun.guo, zajec5,
sudeep.holla, agross, linux-api, linux-kernel, devicetree,
qemu-devel, imammedo, peter.maydell, leif.lindholm,
ard.biesheuvel, pbonzini, kraxel, ehabkost, luto, stefanha,
revol, matt, rth
Refrain from defining default fw_cfg register offsets on
unsupported architectures -- throw an error instead. If
QEMU were to add fw_cfg support on additional architectures,
we should add them to the FW_CFG_SYSFS depends statement in
drivers/firmware/Kconfig, and provide default values for
register offsets in drivers/firmware/qemu_fw_cfg.c at that
time.
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
---
drivers/firmware/qemu_fw_cfg.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/firmware/qemu_fw_cfg.c b/drivers/firmware/qemu_fw_cfg.c
index fedbff5..79f6b7b 100644
--- a/drivers/firmware/qemu_fw_cfg.c
+++ b/drivers/firmware/qemu_fw_cfg.c
@@ -109,9 +109,7 @@ static void fw_cfg_io_cleanup(void)
# define FW_CFG_CTRL_OFF 0x00
# define FW_CFG_DATA_OFF 0x01
# else
-# warning "QEMU FW_CFG may not be available on this architecture!"
-# define FW_CFG_CTRL_OFF 0x00
-# define FW_CFG_DATA_OFF 0x01
+# error "QEMU FW_CFG not available on this architecture!"
# endif
#endif
--
2.4.3
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] firmware: fw_cfg register offsets on supported architectures only
2016-02-22 21:18 [PATCH] firmware: fw_cfg register offsets on supported architectures only Gabriel Somlo
@ 2016-02-23 5:08 ` Michael S. Tsirkin
0 siblings, 0 replies; 2+ messages in thread
From: Michael S. Tsirkin @ 2016-02-23 5:08 UTC (permalink / raw)
To: Gabriel Somlo
Cc: gregkh, robh+dt, pawel.moll, mark.rutland, ijc+devicetree, galak,
arnd, lersek, ralf, rmk+kernel, eric, hanjun.guo, zajec5,
sudeep.holla, agross, linux-api, linux-kernel, devicetree,
qemu-devel, imammedo, peter.maydell, leif.lindholm,
ard.biesheuvel, pbonzini, kraxel, ehabkost, luto, stefanha,
revol, matt, rth
On Mon, Feb 22, 2016 at 04:18:18PM -0500, Gabriel Somlo wrote:
> Refrain from defining default fw_cfg register offsets on
> unsupported architectures -- throw an error instead. If
> QEMU were to add fw_cfg support on additional architectures,
> we should add them to the FW_CFG_SYSFS depends statement in
> drivers/firmware/Kconfig, and provide default values for
> register offsets in drivers/firmware/qemu_fw_cfg.c at that
> time.
>
> Suggested-by: Michael S. Tsirkin <mst@redhat.com>
> Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
> ---
> drivers/firmware/qemu_fw_cfg.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/firmware/qemu_fw_cfg.c b/drivers/firmware/qemu_fw_cfg.c
> index fedbff5..79f6b7b 100644
> --- a/drivers/firmware/qemu_fw_cfg.c
> +++ b/drivers/firmware/qemu_fw_cfg.c
> @@ -109,9 +109,7 @@ static void fw_cfg_io_cleanup(void)
> # define FW_CFG_CTRL_OFF 0x00
> # define FW_CFG_DATA_OFF 0x01
> # else
> -# warning "QEMU FW_CFG may not be available on this architecture!"
> -# define FW_CFG_CTRL_OFF 0x00
> -# define FW_CFG_DATA_OFF 0x01
> +# error "QEMU FW_CFG not available on this architecture!"
> # endif
> #endif
>
> --
> 2.4.3
^ permalink raw reply [flat|nested] 2+ messages in thread
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