From: Witold Szczeponik Date: Thu, 27 Oct 2011 18:56:47 +0000 (+0200) Subject: PNPACPI: Simplify disabled resource registration X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=18fd470a48396c8795ba7256c5973e92ffa25cb3;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git PNPACPI: Simplify disabled resource registration The attached patch simplifies 29df8d8f8702f0f53c1375015f09f04bc8d023c1. As the "pnp_xxx" structs are not designed to cope with IORESOURCE_DISABLED, and hence no code can test for this value, setting this value is actually a "no op" and can be skipped altogether. It is sufficient to remove the checks for "empty" resources and continue processing. The patch is applied against 3.1. Signed-off-by: Witold Szczeponik Acked-by: Bjorn Helgaas Signed-off-by: Len Brown --- diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c index bbf3edd85be..5be4a392a3a 100644 --- a/drivers/pnp/pnpacpi/rsparser.c +++ b/drivers/pnp/pnpacpi/rsparser.c @@ -509,15 +509,12 @@ static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev, struct acpi_resource_dma *p) { int i; - unsigned char map = 0, flags = 0; - - if (p->channel_count == 0) - flags |= IORESOURCE_DISABLED; + unsigned char map = 0, flags; for (i = 0; i < p->channel_count; i++) map |= 1 << p->channels[i]; - flags |= dma_flags(dev, p->type, p->bus_master, p->transfer); + flags = dma_flags(dev, p->type, p->bus_master, p->transfer); pnp_register_dma_resource(dev, option_flags, map, flags); } @@ -527,17 +524,14 @@ static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev, { int i; pnp_irq_mask_t map; - unsigned char flags = 0; - - if (p->interrupt_count == 0) - flags |= IORESOURCE_DISABLED; + unsigned char flags; bitmap_zero(map.bits, PNP_IRQ_NR); for (i = 0; i < p->interrupt_count; i++) if (p->interrupts[i]) __set_bit(p->interrupts[i], map.bits); - flags |= irq_flags(p->triggering, p->polarity, p->sharable); + flags = irq_flags(p->triggering, p->polarity, p->sharable); pnp_register_irq_resource(dev, option_flags, &map, flags); } @@ -547,10 +541,7 @@ static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev, { int i; pnp_irq_mask_t map; - unsigned char flags = 0; - - if (p->interrupt_count == 0) - flags |= IORESOURCE_DISABLED; + unsigned char flags; bitmap_zero(map.bits, PNP_IRQ_NR); for (i = 0; i < p->interrupt_count; i++) { @@ -564,7 +555,7 @@ static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev, } } - flags |= irq_flags(p->triggering, p->polarity, p->sharable); + flags = irq_flags(p->triggering, p->polarity, p->sharable); pnp_register_irq_resource(dev, option_flags, &map, flags); } @@ -574,11 +565,8 @@ static __init void pnpacpi_parse_port_option(struct pnp_dev *dev, { unsigned char flags = 0; - if (io->address_length == 0) - flags |= IORESOURCE_DISABLED; - if (io->io_decode == ACPI_DECODE_16) - flags |= IORESOURCE_IO_16BIT_ADDR; + flags = IORESOURCE_IO_16BIT_ADDR; pnp_register_port_resource(dev, option_flags, io->minimum, io->maximum, io->alignment, io->address_length, flags); } @@ -587,13 +575,8 @@ static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev, unsigned int option_flags, struct acpi_resource_fixed_io *io) { - unsigned char flags = 0; - - if (io->address_length == 0) - flags |= IORESOURCE_DISABLED; - pnp_register_port_resource(dev, option_flags, io->address, io->address, - 0, io->address_length, flags | IORESOURCE_IO_FIXED); + 0, io->address_length, IORESOURCE_IO_FIXED); } static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev, @@ -602,11 +585,8 @@ static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev, { unsigned char flags = 0; - if (p->address_length == 0) - flags |= IORESOURCE_DISABLED; - if (p->write_protect == ACPI_READ_WRITE_MEMORY) - flags |= IORESOURCE_MEM_WRITEABLE; + flags = IORESOURCE_MEM_WRITEABLE; pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum, p->alignment, p->address_length, flags); } @@ -617,11 +597,8 @@ static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev, { unsigned char flags = 0; - if (p->address_length == 0) - flags |= IORESOURCE_DISABLED; - if (p->write_protect == ACPI_READ_WRITE_MEMORY) - flags |= IORESOURCE_MEM_WRITEABLE; + flags = IORESOURCE_MEM_WRITEABLE; pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum, p->alignment, p->address_length, flags); } @@ -632,11 +609,8 @@ static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev, { unsigned char flags = 0; - if (p->address_length == 0) - flags |= IORESOURCE_DISABLED; - if (p->write_protect == ACPI_READ_WRITE_MEMORY) - flags |= IORESOURCE_MEM_WRITEABLE; + flags = IORESOURCE_MEM_WRITEABLE; pnp_register_mem_resource(dev, option_flags, p->address, p->address, 0, p->address_length, flags); } @@ -656,19 +630,16 @@ static __init void pnpacpi_parse_address_option(struct pnp_dev *dev, return; } - if (p->address_length == 0) - flags |= IORESOURCE_DISABLED; - if (p->resource_type == ACPI_MEMORY_RANGE) { if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY) - flags |= IORESOURCE_MEM_WRITEABLE; + flags = IORESOURCE_MEM_WRITEABLE; pnp_register_mem_resource(dev, option_flags, p->minimum, p->minimum, 0, p->address_length, flags); } else if (p->resource_type == ACPI_IO_RANGE) pnp_register_port_resource(dev, option_flags, p->minimum, p->minimum, 0, p->address_length, - flags | IORESOURCE_IO_FIXED); + IORESOURCE_IO_FIXED); } static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev, @@ -678,19 +649,16 @@ static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev, struct acpi_resource_extended_address64 *p = &r->data.ext_address64; unsigned char flags = 0; - if (p->address_length == 0) - flags |= IORESOURCE_DISABLED; - if (p->resource_type == ACPI_MEMORY_RANGE) { if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY) - flags |= IORESOURCE_MEM_WRITEABLE; + flags = IORESOURCE_MEM_WRITEABLE; pnp_register_mem_resource(dev, option_flags, p->minimum, p->minimum, 0, p->address_length, flags); } else if (p->resource_type == ACPI_IO_RANGE) pnp_register_port_resource(dev, option_flags, p->minimum, p->minimum, 0, p->address_length, - flags | IORESOURCE_IO_FIXED); + IORESOURCE_IO_FIXED); } struct acpipnp_parse_option_s {