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author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2008-06-27 16:56:53 -0600 |
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committer | Andi Kleen <andi@basil.nowhere.org> | 2008-07-16 23:27:05 +0200 |
commit | 87e4acf3ebc02c9d0a2f7a37b655c49176c4d765 (patch) | |
tree | 1d5ee98084c9de22d2de95dad84ae23a188f6429 /drivers/pnp/isapnp | |
parent | b897f46cf7941fff8130ccdaf85f39528bff6a51 (diff) | |
download | linux-87e4acf3ebc02c9d0a2f7a37b655c49176c4d765.tar.gz linux-87e4acf3ebc02c9d0a2f7a37b655c49176c4d765.tar.bz2 linux-87e4acf3ebc02c9d0a2f7a37b655c49176c4d765.zip |
PNP: remove pnp_resource.index
We used pnp_resource.index to keep track of which ISAPNP configuration
register a resource should be written to. We needed this only to
handle the case where a register is disabled but a subsequent register
in the same set is enabled.
Rather than explicitly maintaining the pnp_resource.index, this patch
adds a resource every time we read an ISAPNP configuration register
and marks the resource as IORESOURCE_DISABLED when appropriate. This
makes the position in the pnp_resource_table always correspond to the
config register index.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'drivers/pnp/isapnp')
-rw-r--r-- | drivers/pnp/isapnp/core.c | 84 |
1 files changed, 29 insertions, 55 deletions
diff --git a/drivers/pnp/isapnp/core.c b/drivers/pnp/isapnp/core.c index f1bccdbdeb08..752b51fbaa6c 100644 --- a/drivers/pnp/isapnp/core.c +++ b/drivers/pnp/isapnp/core.c @@ -928,7 +928,6 @@ EXPORT_SYMBOL(isapnp_write_byte); static int isapnp_get_resources(struct pnp_dev *dev) { - struct pnp_resource *pnp_res; int i, ret; dev_dbg(&dev->dev, "get resources\n"); @@ -940,35 +939,23 @@ static int isapnp_get_resources(struct pnp_dev *dev) for (i = 0; i < ISAPNP_MAX_PORT; i++) { ret = isapnp_read_word(ISAPNP_CFG_PORT + (i << 1)); - if (ret) { - pnp_res = pnp_add_io_resource(dev, ret, ret, 0); - if (pnp_res) - pnp_res->index = i; - } + pnp_add_io_resource(dev, ret, ret, + ret == 0 ? IORESOURCE_DISABLED : 0); } for (i = 0; i < ISAPNP_MAX_MEM; i++) { ret = isapnp_read_word(ISAPNP_CFG_MEM + (i << 3)) << 8; - if (ret) { - pnp_res = pnp_add_mem_resource(dev, ret, ret, 0); - if (pnp_res) - pnp_res->index = i; - } + pnp_add_mem_resource(dev, ret, ret, + ret == 0 ? IORESOURCE_DISABLED : 0); } for (i = 0; i < ISAPNP_MAX_IRQ; i++) { ret = isapnp_read_word(ISAPNP_CFG_IRQ + (i << 1)) >> 8; - if (ret) { - pnp_res = pnp_add_irq_resource(dev, ret, 0); - if (pnp_res) - pnp_res->index = i; - } + pnp_add_irq_resource(dev, ret, + ret == 0 ? IORESOURCE_DISABLED : 0); } for (i = 0; i < ISAPNP_MAX_DMA; i++) { ret = isapnp_read_byte(ISAPNP_CFG_DMA + i); - if (ret != 4) { - pnp_res = pnp_add_dma_resource(dev, ret, 0); - if (pnp_res) - pnp_res->index = i; - } + pnp_add_dma_resource(dev, ret, + ret == 4 ? IORESOURCE_DISABLED : 0); } __end: @@ -978,62 +965,49 @@ __end: static int isapnp_set_resources(struct pnp_dev *dev) { - struct pnp_resource *pnp_res; struct resource *res; - int tmp, index; + int tmp; dev_dbg(&dev->dev, "set resources\n"); isapnp_cfg_begin(dev->card->number, dev->number); dev->active = 1; for (tmp = 0; tmp < ISAPNP_MAX_PORT; tmp++) { - pnp_res = pnp_get_pnp_resource(dev, IORESOURCE_IO, tmp); - if (!pnp_res) - continue; - res = &pnp_res->res; - if (pnp_resource_valid(res)) { - index = pnp_res->index; + res = pnp_get_resource(dev, IORESOURCE_IO, tmp); + if (res && pnp_resource_valid(res) && + !(res->flags & IORESOURCE_DISABLED)) { dev_dbg(&dev->dev, " set io %d to %#llx\n", - index, (unsigned long long) res->start); - isapnp_write_word(ISAPNP_CFG_PORT + (index << 1), + tmp, (unsigned long long) res->start); + isapnp_write_word(ISAPNP_CFG_PORT + (tmp << 1), res->start); } } for (tmp = 0; tmp < ISAPNP_MAX_IRQ; tmp++) { - pnp_res = pnp_get_pnp_resource(dev, IORESOURCE_IRQ, tmp); - if (!pnp_res) - continue; - res = &pnp_res->res; - if (pnp_resource_valid(res)) { + res = pnp_get_resource(dev, IORESOURCE_IRQ, tmp); + if (res && pnp_resource_valid(res) && + !(res->flags & IORESOURCE_DISABLED)) { int irq = res->start; if (irq == 2) irq = 9; - index = pnp_res->index; - dev_dbg(&dev->dev, " set irq %d to %d\n", index, irq); - isapnp_write_byte(ISAPNP_CFG_IRQ + (index << 1), irq); + dev_dbg(&dev->dev, " set irq %d to %d\n", tmp, irq); + isapnp_write_byte(ISAPNP_CFG_IRQ + (tmp << 1), irq); } } for (tmp = 0; tmp < ISAPNP_MAX_DMA; tmp++) { - pnp_res = pnp_get_pnp_resource(dev, IORESOURCE_DMA, tmp); - if (!pnp_res) - continue; - res = &pnp_res->res; - if (pnp_resource_valid(res)) { - index = pnp_res->index; + res = pnp_get_resource(dev, IORESOURCE_DMA, tmp); + if (res && pnp_resource_valid(res) && + !(res->flags & IORESOURCE_DISABLED)) { dev_dbg(&dev->dev, " set dma %d to %lld\n", - index, (unsigned long long) res->start); - isapnp_write_byte(ISAPNP_CFG_DMA + index, res->start); + tmp, (unsigned long long) res->start); + isapnp_write_byte(ISAPNP_CFG_DMA + tmp, res->start); } } for (tmp = 0; tmp < ISAPNP_MAX_MEM; tmp++) { - pnp_res = pnp_get_pnp_resource(dev, IORESOURCE_MEM, tmp); - if (!pnp_res) - continue; - res = &pnp_res->res; - if (pnp_resource_valid(res)) { - index = pnp_res->index; + res = pnp_get_resource(dev, IORESOURCE_MEM, tmp); + if (res && pnp_resource_valid(res) && + !(res->flags & IORESOURCE_DISABLED)) { dev_dbg(&dev->dev, " set mem %d to %#llx\n", - index, (unsigned long long) res->start); - isapnp_write_word(ISAPNP_CFG_MEM + (index << 3), + tmp, (unsigned long long) res->start); + isapnp_write_word(ISAPNP_CFG_MEM + (tmp << 3), (res->start >> 8) & 0xffff); } } |