Possibly related (same subject, not in this thread)

• 2014-09-23 · Re: [PATCH] ahci_xgene: Fix the error print invalid resource for APM X-Gene SoC AHCI SATA Host Controller driver. · Tejun Heo <tj@kernel.org>
• 2014-09-22 · [PATCH] ahci_xgene: Fix the error print invalid resource for APM X-Gene SoC AHCI SATA Host Controller driver. · Suman Tripathi <hidden>
• 2014-09-15 · Re: [PATCH] ahci_xgene: Fix the error print invalid resource for APM X-Gene SoC AHCI SATA Host Controller driver. · Russell King - ARM Linux <hidden>
• 2014-09-14 · Re: [PATCH] ahci_xgene: Fix the error print invalid resource for APM X-Gene SoC AHCI SATA Host Controller driver. · Tejun Heo <tj@kernel.org>
• 2014-09-12 · Re: [PATCH] ahci_xgene: Fix the error print invalid resource for APM X-Gene SoC AHCI SATA Host Controller driver. · Tejun Heo <tj@kernel.org>

On Mon, Sep 15, 2014 at 01:10:01PM +0530, Suman Tripathi wrote:

I'm suggesting setting ctx->cs_mux to NULL on failure.  IOW,

	if (res) {
		ctx->csr_mux = devm_ioremap_resources();
		if (IS_ERR(ctx->csr_mux)) {
			print warning or something;
			ctx->csr_mux = NULL;
		}
	}

Thanks.

-- 
tejun