Re: New radeonfb, mostly untested

Il Sun, Sep 07, 2003 at 06:37:20PM +0200, Benjamin Herrenschmidt ha scritto: 

Ok, enough for today, my head hurts, it builds, it detects my
PowerBook's internal panel properly, I didn't test anything else
yet nor x86, let me know what you think...

+unmap_rom:	
+	if (rinfo->mon1_EDID)
+	    kfree(rinfo->mon1_EDID);
+	if (rinfo->mon2_EDID)
+	    kfree(rinfo->mon2_EDID);
+	if (rinfo->mon1_modedb)
+		fb_destroy_modedb(rinfo->mon1_modedb);
+	radeon_delete_i2c_busses(rinfo);
+	if (rinfo->bios_seg)
+		radeon_unmap_ROM(rinfo, pdev);
+	iounmap ((void*)rinfo->mmio_base);
+release_mmio:
+	release_mem_region (rinfo->mmio_base_phys,
+			    pci_resource_len(pdev, 2));
+release_fb:	
+	release_mem_region (rinfo->fb_base_phys,
+			    pci_resource_len(pdev, 0));
+free_rinfo:	
+	kfree (rinfo);
+	return -ENODEV;
+}
+
+
+
+static void __devexit radeonfb_pci_unregister (struct pci_dev *pdev)
+{
+        struct radeonfb_info *rinfo = pci_get_drvdata(pdev);
+ 
+        if (!rinfo)
+                return;
+ 
+	/* restore original state
+	 * 
+	 * Doesn't quite work yet, possibly because of the PPC hacking
+	 * I do on startup, disable for now. --BenH
+	 */
+        radeon_write_mode (rinfo, &rinfo->init_state);
+ 
+#ifdef CONFIG_MTRR
+	if (rinfo->mtrr_hdl >= 0)
+		mtrr_del(rinfo->mtrr_hdl, 0, 0);
+#endif
+
+        unregister_framebuffer ((struct fb_info *) rinfo);
+
+        iounmap ((void*)rinfo->mmio_base);
+        iounmap ((void*)rinfo->fb_base);
+ 
+	release_mem_region (rinfo->mmio_base_phys,
+			    pci_resource_len(pdev, 2));
+	release_mem_region (rinfo->fb_base_phys,
+			    pci_resource_len(pdev, 0));
+
+	if (rinfo->mon1_EDID)
+		kfree(rinfo->mon1_EDID);
+	if (rinfo->mon2_EDID)
+		kfree(rinfo->mon2_EDID);
+	if (rinfo->mon1_modedb)
+		fb_destroy_modedb(rinfo->mon1_modedb);
+	radeon_delete_i2c_busses(rinfo);
+        
+        kfree (rinfo);
+}
 
There's a problem here: sysfs attributes are unregistered after
radeonfb_pci_unregister returns, so we have a small windows where
mon1_EDID and mon2_EDID are invalid and edid1 and edid2 are still
there in sysfs. Ditto for pci_register.

Oh, you didn't update aty/Makefile ;)

obj-$(CONFIG_FB_RADEON) += radeonfb.o
radeonfb-y += radeon_base.o radeon_monitor.o radeon_pm.o
radeonfb-$(CONFIG_FB_RADEON_I2C) += radeon_i2c.o

Luca
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