diff options
| author |   Maciej W. Rozycki <macro@linux-mips.org> | 2007-10-16 01:29:36 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:43:20 -0700 |
| commit | 840bc9b0937aebd6004debf457cfb53f1f122d3b (patch) | |
| tree | cad479ded9e807c6d657cab201695dddad8ad9e4 /drivers/video/pmagb-b-fb.c | |
| parent | nvidiafb: Correctly assign the i2c class with the port reversal (diff) | |
| download | linux-dev-840bc9b0937aebd6004debf457cfb53f1f122d3b.tar.xz linux-dev-840bc9b0937aebd6004debf457cfb53f1f122d3b.zip | |
pmagb-b-fb: improve diagnostics
Add error messages to the probe call.
[adaplas]
On failure, return actual error value instead of -ENXIO.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/pmagb-b-fb.c')
| -rw-r--r-- | drivers/video/pmagb-b-fb.c | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/drivers/video/pmagb-b-fb.c b/drivers/video/pmagb-b-fb.c index 7a0ce7d5af6b..9b80597241b0 100644 --- a/drivers/video/pmagb-b-fb.c +++ b/drivers/video/pmagb-b-fb.c @@ -254,16 +254,23 @@ static int __init pmagbbfb_probe(struct device *dev) struct pmagbbfb_par *par; char freq0[12], freq1[12]; u32 vid_base; + int err; info = framebuffer_alloc(sizeof(struct pmagbbfb_par), dev); - if (!info) + if (!info) { + printk(KERN_ERR "%s: Cannot allocate memory\n", dev->bus_id); return -ENOMEM; + } par = info->par; dev_set_drvdata(dev, info); - if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) + if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) { + printk(KERN_ERR "%s: Cannot allocate color map\n", + dev->bus_id); + err = -ENOMEM; goto err_alloc; + } info->fbops = &pmagbbfb_ops; info->fix = pmagbbfb_fix; @@ -273,22 +280,31 @@ static int __init pmagbbfb_probe(struct device *dev) /* Request the I/O MEM resource. */ start = tdev->resource.start; len = tdev->resource.end - start + 1; - if (!request_mem_region(start, len, dev->bus_id)) + if (!request_mem_region(start, len, dev->bus_id)) { + printk(KERN_ERR "%s: Cannot reserve FB region\n", dev->bus_id); + err = -EBUSY; goto err_cmap; + } /* MMIO mapping setup. */ info->fix.mmio_start = start; par->mmio = ioremap_nocache(info->fix.mmio_start, info->fix.mmio_len); - if (!par->mmio) + if (!par->mmio) { + printk(KERN_ERR "%s: Cannot map MMIO\n", dev->bus_id); + err = -ENOMEM; goto err_resource; + } par->sfb = par->mmio + PMAGB_B_SFB; par->dac = par->mmio + PMAGB_B_BT459; /* Frame buffer mapping setup. */ info->fix.smem_start = start + PMAGB_B_FBMEM; par->smem = ioremap_nocache(info->fix.smem_start, info->fix.smem_len); - if (!par->smem) + if (!par->smem) { + printk(KERN_ERR "%s: Cannot map FB\n", dev->bus_id); + err = -ENOMEM; goto err_mmio_map; + } vid_base = sfb_read(par, SFB_REG_VID_BASE); info->screen_base = (void __iomem *)par->smem + vid_base * 0x1000; info->screen_size = info->fix.smem_len - 2 * vid_base * 0x1000; @@ -297,8 +313,12 @@ static int __init pmagbbfb_probe(struct device *dev) pmagbbfb_screen_setup(info); pmagbbfb_osc_setup(info); - if (register_framebuffer(info) < 0) + err = register_framebuffer(info); + if (err < 0) { + printk(KERN_ERR "%s: Cannot register framebuffer\n", + dev->bus_id); goto err_smem_map; + } get_device(dev); @@ -330,7 +350,7 @@ err_cmap: err_alloc: framebuffer_release(info); - return -ENXIO; + return err; } static int __exit pmagbbfb_remove(struct device *dev) |