From: Thierry Reding treding@nvidia.com
Use pr_fmt() to define the "vga_switcheroo: " prefix that is prepended to all output messages emitted by pr_*() functions. This allows making existing strings much shorter and eliminates a bunch of warnings from checkpatch about lines being overly long.
Signed-off-by: Thierry Reding treding@nvidia.com --- drivers/gpu/vga/vga_switcheroo.c | 31 ++++++++++++++++++------------- 1 file changed, 18 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c index 610e2cd72563..faa57e546138 100644 --- a/drivers/gpu/vga/vga_switcheroo.c +++ b/drivers/gpu/vga/vga_switcheroo.c @@ -17,6 +17,8 @@ * - switch_check - check if the device is in a position to switch now */
+#define pr_fmt(fmt) "vga_switcheroo: " fmt + #include <linux/module.h> #include <linux/seq_file.h> #include <linux/uaccess.h> @@ -111,7 +113,7 @@ int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler)
vgasr_priv.handler = handler; if (vga_switcheroo_ready()) { - pr_info("vga_switcheroo: enabled\n"); + pr_info("enabled\n"); vga_switcheroo_enable(); } mutex_unlock(&vgasr_mutex); @@ -124,7 +126,7 @@ void vga_switcheroo_unregister_handler(void) mutex_lock(&vgasr_mutex); vgasr_priv.handler = NULL; if (vgasr_priv.active) { - pr_info("vga_switcheroo: disabled\n"); + pr_info("disabled\n"); vga_switcheroo_debugfs_fini(&vgasr_priv); vgasr_priv.active = false; } @@ -155,7 +157,7 @@ static int register_client(struct pci_dev *pdev, vgasr_priv.registered_clients++;
if (vga_switcheroo_ready()) { - pr_info("vga_switcheroo: enabled\n"); + pr_info("enabled\n"); vga_switcheroo_enable(); } mutex_unlock(&vgasr_mutex); @@ -235,7 +237,7 @@ void vga_switcheroo_unregister_client(struct pci_dev *pdev) kfree(client); } if (vgasr_priv.active && vgasr_priv.registered_clients < 2) { - pr_info("vga_switcheroo: disabled\n"); + pr_info("disabled\n"); vga_switcheroo_debugfs_fini(&vgasr_priv); vgasr_priv.active = false; } @@ -375,7 +377,7 @@ static bool check_can_switch(void)
list_for_each_entry(client, &vgasr_priv.clients, list) { if (!client->ops->can_switch(client->pdev)) { - pr_err("vga_switcheroo: client %x refused switch\n", client->id); + pr_err("client %x refused switch\n", client->id); return false; } } @@ -484,20 +486,20 @@ vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf, if (can_switch) { ret = vga_switchto_stage1(client); if (ret) - pr_err("vga_switcheroo: switching failed stage 1 %d\n", ret); + pr_err("switching failed stage 1 %d\n", ret);
ret = vga_switchto_stage2(client); if (ret) - pr_err("vga_switcheroo: switching failed stage 2 %d\n", ret); + pr_err("switching failed stage 2 %d\n", ret);
} else { - pr_info("vga_switcheroo: setting delayed switch to client %d\n", client->id); + pr_info("setting delayed switch to client %d\n", client->id); vgasr_priv.delayed_switch_active = true; vgasr_priv.delayed_client_id = client_id;
ret = vga_switchto_stage1(client); if (ret) - pr_err("vga_switcheroo: delayed switching stage 1 failed %d\n", ret); + pr_err("delayed switching stage 1 failed %d\n", ret); }
out: @@ -528,20 +530,22 @@ static void vga_switcheroo_debugfs_fini(struct vgasr_priv *priv)
static int vga_switcheroo_debugfs_init(struct vgasr_priv *priv) { + static const char mp[] = "/sys/kernel/debug"; + /* already initialised */ if (priv->debugfs_root) return 0; priv->debugfs_root = debugfs_create_dir("vgaswitcheroo", NULL);
if (!priv->debugfs_root) { - pr_err("vga_switcheroo: Cannot create /sys/kernel/debug/vgaswitcheroo\n"); + pr_err("Cannot create %s/vgaswitcheroo\n", mp); goto fail; }
priv->switch_file = debugfs_create_file("switch", 0644, priv->debugfs_root, NULL, &vga_switcheroo_debugfs_fops); if (!priv->switch_file) { - pr_err("vga_switcheroo: cannot create /sys/kernel/debug/vgaswitcheroo/switch\n"); + pr_err("cannot create %s/vgaswitcheroo/switch\n", mp); goto fail; } return 0; @@ -560,7 +564,8 @@ int vga_switcheroo_process_delayed_switch(void) if (!vgasr_priv.delayed_switch_active) goto err;
- pr_info("vga_switcheroo: processing delayed switch to %d\n", vgasr_priv.delayed_client_id); + pr_info("processing delayed switch to %d\n", + vgasr_priv.delayed_client_id);
client = find_client_from_id(&vgasr_priv.clients, vgasr_priv.delayed_client_id); @@ -569,7 +574,7 @@ int vga_switcheroo_process_delayed_switch(void)
ret = vga_switchto_stage2(client); if (ret) - pr_err("vga_switcheroo: delayed switching failed stage 2 %d\n", ret); + pr_err("delayed switching failed stage 2 %d\n", ret);
vgasr_priv.delayed_switch_active = false; err = 0;