sparc64: fix wrong m48t59 RTC year
Correctly calculate offset to the year register for Mostek RTC. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -500,6 +500,7 @@ static struct of_platform_driver bq4802_driver = {
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static unsigned char mostek_read_byte(struct device *dev, u32 ofs)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct m48t59_plat_data *pdata = pdev->dev.platform_data;
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void __iomem *regs;
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unsigned char val;
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@ -507,7 +508,7 @@ static unsigned char mostek_read_byte(struct device *dev, u32 ofs)
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val = readb(regs + ofs);
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/* the year 0 is 1968 */
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if (ofs == M48T59_YEAR) {
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if (ofs == pdata->offset + M48T59_YEAR) {
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val += 0x68;
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if ((val & 0xf) > 9)
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val += 6;
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@ -518,10 +519,11 @@ static unsigned char mostek_read_byte(struct device *dev, u32 ofs)
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static void mostek_write_byte(struct device *dev, u32 ofs, u8 val)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct m48t59_plat_data *pdata = pdev->dev.platform_data;
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void __iomem *regs;
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regs = (void __iomem *) pdev->resource[0].start;
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if (ofs == M48T59_YEAR) {
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if (ofs == pdata->offset + M48T59_YEAR) {
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if (val < 0x68)
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val += 0x32;
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else
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