The patch titled
pmagb-b-fb: improve diagnostics
has been added to the -mm tree. Its filename is
pmagb-b-fb-improve-diagnostics.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: pmagb-b-fb: improve diagnostics
From: Maciej W. Rozycki <macro@xxxxxxxxxxxxxx>
Add error messages to the probe call.
[adaplas]
On failure, return actual error value instead of -ENXIO.
Signed-off-by: Maciej W. Rozycki <macro@xxxxxxxxxxxxxx>
Signed-off-by: Antonino Daplas <adaplas@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
diff -puN drivers/video/pmagb-b-fb.c~pmagb-b-fb-improve-diagnostics drivers/video/pmagb-b-fb.c
--- a/drivers/video/pmagb-b-fb.c~pmagb-b-fb-improve-diagnostics
+++ a/drivers/video/pmagb-b-fb.c
@@ -254,16 +254,23 @@ static int __init pmagbbfb_probe(struct
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
/* 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
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)
_
Patches currently in -mm which might be from macro@xxxxxxxxxxxxxx are
git-mips.patch
git-net.patch
phylib-spinlock-fixes-for-softirqs.patch
phylib-irq-event-workqueue-handling-fixes.patch
phylib-fix-an-interrupt-loop-potential-when-halting.patch
include-linux-typesh-in-if_fddih.patch
avoid-negative-and-full-width-shifts-in-radix-treec.patch
lk201-remove-obsolete-driver.patch
kernel-printkc-concerns-about-the-console-handover.patch
drivers-video-kconfig-fix-fb_pmagb_b-dependencies.patch
drivers-video-pmag-ba-fbc-improve-diagnostics.patch
drivers-video-pmag-ba-fbc-improve-diagnostics-fix.patch
pmagb-b-fb-improve-diagnostics.patch
-
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