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From:   Masahiro Yamada <yamada.masahiro@socionext.com>
To:     linux-mtd@lists.infradead.org,
        Miquel Raynal <miquel.raynal@bootlin.com>
Cc:     Masahiro Yamada <yamada.masahiro@socionext.com>,
        Brian Norris <computersforpeace@gmail.com>,
        linux-kernel@vger.kernel.org, Marek Vasut <marek.vasut@gmail.com>,
        Richard Weinberger <richard@nod.at>,
        David Woodhouse <dwmw2@infradead.org>,
        Boris Brezillon <bbrezillon@kernel.org>
Subject: [PATCH v4 8/9] mtd: rawnand: denali: remove DENALI_NR_BANKS macro
Date:   Fri, 29 Mar 2019 16:28:20 +0900
Message-Id: <1553844501-7119-9-git-send-email-yamada.masahiro@socionext.com>
In-Reply-To: <1553844501-7119-1-git-send-email-yamada.masahiro@socionext.com>
References: <1553844501-7119-1-git-send-email-yamada.masahiro@socionext.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Use the runtime-detected denali->nbanks instead of hard-coded
DENALI_NR_BANKS (=4).

The actual number of banks depends on the IP configuration, and
can be less than DENALI_NR_BANKS. It is pointless to touch
registers of unsupported banks.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

Changes in v4: None
Changes in v3: None
Changes in v2: None

 drivers/mtd/nand/raw/denali.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/mtd/nand/raw/denali.c b/drivers/mtd/nand/raw/denali.c
index 687feab..6d0ee5e 100644
--- a/drivers/mtd/nand/raw/denali.c
+++ b/drivers/mtd/nand/raw/denali.c
@@ -40,7 +40,6 @@
 #define DENALI_BANK(denali)	((denali)->active_bank << 24)
 
 #define DENALI_INVALID_BANK	-1
-#define DENALI_NR_BANKS		4
 
 static struct denali_chip *to_denali_chip(struct nand_chip *chip)
 {
@@ -92,7 +91,7 @@ static void denali_enable_irq(struct denali_controller *denali)
 {
 	int i;
 
-	for (i = 0; i < DENALI_NR_BANKS; i++)
+	for (i = 0; i < denali->nbanks; i++)
 		iowrite32(U32_MAX, denali->reg + INTR_EN(i));
 	iowrite32(GLOBAL_INT_EN_FLAG, denali->reg + GLOBAL_INT_ENABLE);
 }
@@ -101,7 +100,7 @@ static void denali_disable_irq(struct denali_controller *denali)
 {
 	int i;
 
-	for (i = 0; i < DENALI_NR_BANKS; i++)
+	for (i = 0; i < denali->nbanks; i++)
 		iowrite32(0, denali->reg + INTR_EN(i));
 	iowrite32(0, denali->reg + GLOBAL_INT_ENABLE);
 }
@@ -117,7 +116,7 @@ static void denali_clear_irq_all(struct denali_controller *denali)
 {
 	int i;
 
-	for (i = 0; i < DENALI_NR_BANKS; i++)
+	for (i = 0; i < denali->nbanks; i++)
 		denali_clear_irq(denali, i, U32_MAX);
 }
 
@@ -130,7 +129,7 @@ static irqreturn_t denali_isr(int irq, void *dev_id)
 
 	spin_lock(&denali->irq_lock);
 
-	for (i = 0; i < DENALI_NR_BANKS; i++) {
+	for (i = 0; i < denali->nbanks; i++) {
 		irq_status = ioread32(denali->reg + INTR_STATUS(i));
 		if (irq_status)
 			ret = IRQ_HANDLED;
-- 
2.7.4