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 79f28cc73ad355bdaa024d47dd230e6e56e1ff6b..589bc3c5464047832996bdf7584fec349018e9c0 100644 (file)
--- a/drivers/base/firmware_loader/main.c
+++ b/drivers/base/firmware_loader/main.c
@@ -523,9 +523,12 @@ 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 328cfd1bfe86d64ebf9225ab2cfb4a2d7c845cc3..ff16e1ccaf40bc7ae151e7b09dcfc2f32f049cac 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -1096,6 +1096,7 @@ 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 40969c912a1218b1dfad601aff1c2a88f957a335..75f339d96d3587ee0be80532a9631aae820cd29b 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -389,6 +389,7 @@ 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;
        }