Blackfin arch: panic when running on a chip rev below what we are compiled for (7419a327) · Commits · 戴 / test

If we are running on a chip revision below what we are compiled for, there will be missing anomaly workarounds, and a panic is inevitable. Do is sooner, rather than later, so people don't look for bugs that already have workarounds (that they turned off). Signed-off-by:

Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by:

Bryan Wu <cooloney@kernel.org>

arch/blackfin/kernel/setup.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -876,9 +876,12 @@ void __init setup_arch(char **cmdline_p)
		if (bfin_compiled_revid() == -1)
		printk(KERN_ERR "Warning: Compiled for Rev none, but running on Rev %d\n",
		bfin_revid());
		else if (bfin_compiled_revid() != 0xffff)
		else if (bfin_compiled_revid() != 0xffff) {
		printk(KERN_ERR "Warning: Compiled for Rev %d, but running on Rev %d\n",
		bfin_compiled_revid(), bfin_revid());
		if (bfin_compiled_revid() > bfin_revid())
		panic("Error: you are missing anomaly workarounds for this rev\n");
		}
		}
		if (bfin_revid() < CONFIG_BF_REV_MIN \|\| bfin_revid() > CONFIG_BF_REV_MAX)
		printk(KERN_ERR "Warning: Unsupported Chip Revision ADSP-%s Rev 0.%d detected\n",

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