dmaengine: acpi-dma: check for 64-bit MMIO address
Currently the match DMA controller is done only for lower 32 bits of address which might be not true on 64-bit platform. Check upper portion as well. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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@ -15,6 +15,7 @@
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#include <linux/device.h>
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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@ -72,7 +73,9 @@ static int acpi_dma_parse_resource_group(const struct acpi_csrt_group *grp,
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si = (const struct acpi_csrt_shared_info *)&grp[1];
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/* Match device by MMIO and IRQ */
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if (si->mmio_base_low != mem || si->gsi_interrupt != irq)
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if (si->mmio_base_low != lower_32_bits(mem) ||
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si->mmio_base_high != upper_32_bits(mem) ||
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si->gsi_interrupt != irq)
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return 0;
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dev_dbg(&adev->dev, "matches with %.4s%04X (rev %u)\n",
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