[PATCH v7 2/3] ahci_xgene: Skip the PHY and clock initialization if already configured by the firmware.
From: tj@kernel.org (Tejun Heo)
Date: 2014-08-19 15:14:21
Also in:
linux-devicetree, linux-ide, linux-scsi
On Tue, Aug 19, 2014 at 12:01:50PM +0530, Suman Tripathi wrote:
This patch implements the feature to skip the PHY and clock initialization if it is already configured by the firmware. Signed-off-by: Loc Ho <redacted> Signed-off-by: Suman Tripathi <redacted>
...
+static int xgene_ahci_is_memram_inited(struct xgene_ahci_context *ctx)
+{
+ void __iomem *diagcsr = ctx->csr_diag;
+
+ if (readl(diagcsr + CFG_MEM_RAM_SHUTDOWN) == 0 &&
+ readl(diagcsr + BLOCK_MEM_RDY) == 0xFFFFFFFF)
+ return 1;
+ return 0;
+}Please make it return bool. Thanks. -- tejun