linux-kernel - [PATCH] accel/ivpu: avoid build failure with CONFIG

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Date:   Fri, 27 Oct 2023 17:26:23 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Jacek Lawrynowicz <jacek.lawrynowicz@...ux.intel.com>,
        Stanislaw Gruszka <stanislaw.gruszka@...ux.intel.com>,
        Oded Gabbay <ogabbay@...nel.org>,
        Jeffrey Hugo <quic_jhugo@...cinc.com>,
        Karol Wachowski <karol.wachowski@...ux.intel.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Krystian Pradzynski <krystian.pradzynski@...ux.intel.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH] accel/ivpu: avoid build failure with CONFIG_PM=n

From: Arnd Bergmann <arnd@...db.de>

The usage count of struct dev_pm_info is an implementation detail that
is only available if CONFIG_PM is enabled, so printing it in a debug message
causes a build failure in configurations without PM:

In file included from include/linux/device.h:15,
                 from include/linux/pci.h:37,
                 from drivers/accel/ivpu/ivpu_pm.c:8:
drivers/accel/ivpu/ivpu_pm.c: In function 'ivpu_rpm_get_if_active':
drivers/accel/ivpu/ivpu_pm.c:254:51: error: 'struct dev_pm_info' has no member named 'usage_count'
  254 |                  atomic_read(&vdev->drm.dev->power.usage_count));
      |                                                   ^
include/linux/dev_printk.h:129:48: note: in definition of macro 'dev_printk'
  129 |                 _dev_printk(level, dev, fmt, ##__VA_ARGS__);            \
      |                                                ^~~~~~~~~~~
drivers/accel/ivpu/ivpu_drv.h:75:17: note: in expansion of macro 'dev_dbg'
   75 |                 dev_dbg((vdev)->drm.dev, "[%s] " fmt, #type, ##args);          \
      |                 ^~~~~~~
drivers/accel/ivpu/ivpu_pm.c:253:9: note: in expansion of macro 'ivpu_dbg'
  253 |         ivpu_dbg(vdev, RPM, "rpm_get_if_active count %d\n",
      |         ^~~~~~~~

The print message does not seem essential, so the easiest workaround is
to just remove it.

Fixes: c39dc15191c4 ("accel/ivpu: Read clock rate only if device is up")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/accel/ivpu/ivpu_pm.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/accel/ivpu/ivpu_pm.c b/drivers/accel/ivpu/ivpu_pm.c
index 0ace218783c8..e9b16cbc26f4 100644
--- a/drivers/accel/ivpu/ivpu_pm.c
+++ b/drivers/accel/ivpu/ivpu_pm.c
@@ -250,9 +250,6 @@ int ivpu_rpm_get_if_active(struct ivpu_device *vdev)
 {
 	int ret;
 
-	ivpu_dbg(vdev, RPM, "rpm_get_if_active count %d\n",
-		 atomic_read(&vdev->drm.dev->power.usage_count));
-
 	ret = pm_runtime_get_if_active(vdev->drm.dev, false);
 	drm_WARN_ON(&vdev->drm, ret < 0);
 
-- 
2.39.2