firmware_class: Refer to Debian wiki page when logging missing firmware

Bug-Debian: https://bugs.debian.org/888405
Forwarded: not-needed

If firmware loading fails due to a missing file, log a second error
message referring to our wiki page about firmware.  This will explain
why some firmware is in non-free, or can't be packaged at all.  Only
do this once per boot.

Do something similar in the radeon and amdgpu drivers, where we have
an early check to avoid failing at a point where we cannot display
anything.

Gbp-Pq: Topic debian
Gbp-Pq: Name firmware_class-refer-to-debian-wiki-firmware-page.patch

diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c
index cedc9383c3b6a20469d5099e852847c4888d2856..66610211765886155b9976f96d4aead00ba49d8d 100644 (file)
--- a/drivers/base/firmware_loader/main.c
+++ b/drivers/base/firmware_loader/main.c
@@ -571,9 +571,12 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv,
        }
        __putname(path);
 
-       if (rc)
+       if (rc) {
                dev_err(device, "firmware: failed to load %s (%d)\n",
                        fw_priv->fw_name, rc);
+               if (rc == -ENOENT)
+                       pr_err_once("See https://wiki.debian.org/Firmware for information about missing firmware\n");
+       }
 
        return rc;
 }

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 450be2b191ec95a9037191a871301e2f31555a48..bd8eeee9f8b13dc188d295877dab5a2134a9036b 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -2149,6 +2149,7 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
 
        if (!amdgpu_firmware_installed()) {
                DRM_ERROR("amdgpu requires firmware installed\n");
+               pr_err_once("See https://wiki.debian.org/Firmware for information about missing firmware\n");
                return -ENODEV;
        }
 

diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 65c425641614b42b66f77e702b69a47f60225636..e75589b7c506f61c5535663f642e6d5a92c9afe6 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -351,6 +351,7 @@ static int radeon_pci_probe(struct pci_dev *pdev,
        if ((ent->driver_data & RADEON_FAMILY_MASK) >= CHIP_R600 &&
            !radeon_firmware_installed()) {
                DRM_ERROR("radeon kernel modesetting for R600 or later requires firmware installed\n");
+               pr_err_once("See https://wiki.debian.org/Firmware for information about missing firmware\n");
                return -ENODEV;
        }