linux-kernel - [PATCH v2] clk: socfpga: fix iomem pointer cast on 64-bit

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Message-Id: <20210314110709.32599-1-krzysztof.kozlowski@canonical.com>
Date:   Sun, 14 Mar 2021 12:07:09 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Dinh Nguyen <dinguyen@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Subject: [PATCH v2] clk: socfpga: fix iomem pointer cast on 64-bit

Pointers should be cast with uintptr_t instead of integer.  This fixes
warning when compile testing on ARM64:

  drivers/clk/socfpga/clk-gate.c: In function ‘socfpga_clk_recalc_rate’:
  drivers/clk/socfpga/clk-gate.c:102:7: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

Fixes: b7cec13f082f ("clk: socfpga: Look for the GPIO_DB_CLK by its offset")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Acked-by: Dinh Nguyen <dinguyen@...nel.org>

---

Changes since v1:
1. Add Fixes and Ack.
2. Use uintptr_t (Stephen Boyd).
---
 drivers/clk/socfpga/clk-gate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/socfpga/clk-gate.c b/drivers/clk/socfpga/clk-gate.c
index 43ecd507bf83..cf94a12459ea 100644
--- a/drivers/clk/socfpga/clk-gate.c
+++ b/drivers/clk/socfpga/clk-gate.c
@@ -99,7 +99,7 @@ static unsigned long socfpga_clk_recalc_rate(struct clk_hw *hwclk,
 		val = readl(socfpgaclk->div_reg) >> socfpgaclk->shift;
 		val &= GENMASK(socfpgaclk->width - 1, 0);
 		/* Check for GPIO_DB_CLK by its offset */
-		if ((int) socfpgaclk->div_reg & SOCFPGA_GPIO_DB_CLK_OFFSET)
+		if ((uintptr_t) socfpgaclk->div_reg & SOCFPGA_GPIO_DB_CLK_OFFSET)
 			div = val + 1;
 		else
 			div = (1 << val);
-- 
2.25.1