[AGPGART] Another missing ioremap() failure check.

Again, from Randy Dunlap

[AGPGART] Another missing ioremap() failure check.
Again, from Randy Dunlap
2d11010b · Dave Jones · b7da9a08 · 2d11010b
Commit 2d11010b authored Aug 15, 2003 by Dave Jones
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drivers/char/agp/intel-agp.c drivers/char/agp/intel-agp.c +4 -0

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--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -75,6 +75,10 @@ static int intel_i810_configure(void)
 	temp &= 0xfff80000;
 	intel_i810_private.registers = (volatile u8 *) ioremap(temp, 128 * 4096);
+	if (!intel_i810_private.registers) {
+		printk(KERN_ERR PFX "Unable to remap memory.\n");
+		return -ENOMEM;
+	}
 	if ((INREG32(intel_i810_private.registers, I810_DRAM_CTL)
 		& I810_DRAM_ROW_0) == I810_DRAM_ROW_0_SDRAM) {