staging: sm750fb: lynxfb_pci_probe: return actual errors

The lynxfb_pci_probe always returned -ENODEV in case of error. Modify it
so that actual error code will be propogated to the caller.

Signed-off-by: Mike Rapoport <mike.rapoport@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/sm750fb/sm750.c b/drivers/staging/sm750fb/sm750.c
index c80b11c..7eb3868 100644 (file)
--- a/drivers/staging/sm750fb/sm750.c
+++ b/drivers/staging/sm750fb/sm750.c
@@ -1006,18 +1006,17 @@ static int lynxfb_pci_probe(struct pci_dev *pdev,
        struct fb_info *info[] = {NULL, NULL};
        struct sm750_dev *sm750_dev = NULL;
        int fbidx;
+       int err;
 
        /* enable device */
-       if (pci_enable_device(pdev)) {
-               pr_err("can not enable device.\n");
-               goto err_enable;
-       }
+       err = pci_enable_device(pdev);
+       if (err)
+               return err;
 
+       err = -ENOMEM;
        sm750_dev = kzalloc(sizeof(*sm750_dev), GFP_KERNEL);
-       if (!sm750_dev) {
-               pr_err("Could not allocate memory for share.\n");
-               goto err_share;
-       }
+       if (!sm750_dev)
+               goto disable_pci;
 
        sm750_dev->fbinfo[0] = sm750_dev->fbinfo[1] = NULL;
        sm750_dev->devid = pdev->device;
@@ -1051,10 +1050,9 @@ static int lynxfb_pci_probe(struct pci_dev *pdev,
        sm750fb_setup(sm750_dev, g_settings);
 
        /* call chip specific mmap routine */
-       if (hw_sm750_map(sm750_dev, pdev)) {
-               pr_err("Memory map failed\n");
-               goto err_map;
-       }
+       err = hw_sm750_map(sm750_dev, pdev);
+       if (err)
+               goto free_sm750_dev;
 
        if (!sm750_dev->mtrr_off)
                sm750_dev->mtrr.vram = arch_phys_wc_add(sm750_dev->vidmem_start,
@@ -1073,6 +1071,7 @@ static int lynxfb_pci_probe(struct pci_dev *pdev,
        /* allocate frame buffer info structor according to g_dualview */
        fbidx = 0;
 ALLOC_FB:
+       err = -ENOMEM;
        info[fbidx] = framebuffer_alloc(sizeof(struct lynxfb_par), &pdev->dev);
        if (!info[fbidx]) {
                pr_err("Could not allocate framebuffer #%d.\n", fbidx);
@@ -1082,7 +1081,6 @@ ALLOC_FB:
                        goto err_info1_alloc;
        } else {
                struct lynxfb_par *par;
-               int errno;
 
                pr_info("framebuffer #%d alloc okay\n", fbidx);
                sm750_dev->fbinfo[fbidx] = info[fbidx];
@@ -1100,11 +1098,11 @@ ALLOC_FB:
 
                /* register frame buffer */
                pr_info("Ready to register framebuffer #%d.\n", fbidx);
-               errno = register_framebuffer(info[fbidx]);
-               if (errno < 0) {
+               err = register_framebuffer(info[fbidx]);
+               if (err < 0) {
                        pr_err("Failed to register fb_info #%d. err %d\n",
                               fbidx,
-                              errno);
+                              err);
                        if (fbidx == 0)
                                goto err_register0;
                        else
@@ -1129,12 +1127,11 @@ err_register0:
 err_info0_set:
        framebuffer_release(info[0]);
 err_info0_alloc:
-err_map:
+free_sm750_dev:
        kfree(sm750_dev);
-err_share:
+disable_pci:
        pci_disable_device(pdev);
-err_enable:
-       return -ENODEV;
+       return err;
 }
 
 static void lynxfb_pci_remove(struct pci_dev *pdev)