linux-kernel - Re: [PATCH] firmware: tegra: Refactor BPMP driver

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Date:   Thu, 7 Feb 2019 09:56:35 +0100
From:   Thierry Reding <treding@...dia.com>
To:     Guenter Roeck <linux@...ck-us.net>
CC:     Timo Alho <talho@...dia.com>, Jon Hunter <jonathanh@...dia.com>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] firmware: tegra: Refactor BPMP driver

On Wed, Feb 06, 2019 at 02:17:11PM -0800, Guenter Roeck wrote:
> On Thu, Jan 24, 2019 at 07:03:53PM +0200, Timo Alho wrote:
> > Split BPMP driver into common and chip specific parts to facilitate
> > adding support for previous and future Tegra chips that are using BPMP
> > as co-processor.
> > 
> > Signed-off-by: Timo Alho <talho@...dia.com>
> > Acked-by: Jon Hunter <jonathanh@...dia.com>
> > Signed-off-by: Thierry Reding <treding@...dia.com>
> 
> arm:allmodconfig in linux-next:
> 
> drivers/firmware/tegra/bpmp.o:(.rodata+0x280): undefined reference to `tegra210_bpmp_ops'
> drivers/firmware/tegra/bpmp.o:(.rodata+0x2ac): undefined reference to `tegra186_bpmp_ops'

Hi Guenter,

this should be fixed by the below patch. Running build tests now.

Thierry
--- >8 ---
diff --git a/drivers/firmware/tegra/bpmp-private.h b/drivers/firmware/tegra/bpmp-private.h
index 07c3d46abb87..cc343f4ebafb 100644
--- a/drivers/firmware/tegra/bpmp-private.h
+++ b/drivers/firmware/tegra/bpmp-private.h
@@ -23,7 +23,11 @@ struct tegra_bpmp_ops {
 	int (*resume)(struct tegra_bpmp *bpmp);
 };
 
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC)
 extern const struct tegra_bpmp_ops tegra186_bpmp_ops;
+#endif
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
 extern const struct tegra_bpmp_ops tegra210_bpmp_ops;
+#endif
 
 #endif
diff --git a/drivers/firmware/tegra/bpmp.c b/drivers/firmware/tegra/bpmp.c
index 8e3f79959d48..6498c848c82c 100644
--- a/drivers/firmware/tegra/bpmp.c
+++ b/drivers/firmware/tegra/bpmp.c
@@ -813,6 +813,7 @@ static int __maybe_unused tegra_bpmp_resume(struct device *dev)
 
 static SIMPLE_DEV_PM_OPS(tegra_bpmp_pm_ops, NULL, tegra_bpmp_resume);
 
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC)
 static const struct tegra_bpmp_soc tegra186_soc = {
 	.channels = {
 		.cpu_tx = {
@@ -832,7 +833,9 @@ static const struct tegra_bpmp_soc tegra186_soc = {
 	.ops = &tegra186_bpmp_ops,
 	.num_resets = 193,
 };
+#endif
 
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
 static const struct tegra_bpmp_soc tegra210_soc = {
 	.channels = {
 		.cpu_tx = {
@@ -853,10 +856,15 @@ static const struct tegra_bpmp_soc tegra210_soc = {
 	},
 	.ops = &tegra210_bpmp_ops,
 };
+#endif
 
 static const struct of_device_id tegra_bpmp_match[] = {
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC)
 	{ .compatible = "nvidia,tegra186-bpmp", .data = &tegra186_soc },
+#endif
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
 	{ .compatible = "nvidia,tegra210-bpmp", .data = &tegra210_soc },
+#endif
 	{ }
 };
 

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