linux-kernel - [PATCH 11/26] cciss: factor out CISS_signature

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Message-ID: <20100719184536.7908.57654.stgit@beardog.cce.hp.com>
Date:	Mon, 19 Jul 2010 13:45:36 -0500
From:	"Stephen M. Cameron" <scameron@...rdog.cce.hp.com>
To:	axboe@...nel.dk
Cc:	akpm@...ux-foundation.org, mikem@...rdog.cce.hp.com,
	linux-kernel@...r.kernel.org, brace@...rdog.cce.hp.com
Subject: [PATCH 11/26] cciss: factor out CISS_signature_present()

From: Stephen M. Cameron <scameron@...rdog.cce.hp.com>

cciss: factor out CISS_signature_present()

Signed-off-by: Stephen M. Cameron <scameron@...rdog.cce.hp.com>
---
 drivers/block/cciss.c |   18 +++++++++++++-----
 1 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 97feb50..9a48695 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -4096,6 +4096,18 @@ static void __devinit cciss_find_board_params(ctlr_info_t *h)
 	}
 }
 
+static inline bool CISS_signature_present(ctlr_info_t *h)
+{
+	if ((readb(&h->cfgtable->Signature[0]) != 'C') ||
+	    (readb(&h->cfgtable->Signature[1]) != 'I') ||
+	    (readb(&h->cfgtable->Signature[2]) != 'S') ||
+	    (readb(&h->cfgtable->Signature[3]) != 'S')) {
+		dev_warn(&h->pdev->dev, "not a valid CISS config table\n");
+		return false;
+	}
+	return true;
+}
+
 static int __devinit cciss_pci_init(ctlr_info_t *c)
 {
 	int prod_index, err;
@@ -4153,11 +4165,7 @@ static int __devinit cciss_pci_init(ctlr_info_t *c)
 #endif				/* CCISS_DEBUG */
 	cciss_find_board_params(c);
 
-	if ((readb(&c->cfgtable->Signature[0]) != 'C') ||
-	    (readb(&c->cfgtable->Signature[1]) != 'I') ||
-	    (readb(&c->cfgtable->Signature[2]) != 'S') ||
-	    (readb(&c->cfgtable->Signature[3]) != 'S')) {
-		printk("Does not appear to be a valid CISS config table\n");
+	if (!CISS_signature_present(c)) {
 		err = -ENODEV;
 		goto err_out_free_res;
 	}

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