From 75f554bc139461a5a926fad6a6fa90433a00a117 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 6 Mar 2006 04:31:57 +0900 Subject: [PATCH] [PATCH] libata: kill unused xfer_mode functions Preceding xfer_mask changes make the following functions unused. ata_pio_modes(), base_from_shift(), ata_pr_blacklisted(), fgb() Kill them. Also, as xfer_mode_str[] is now only used by ata_mode_string(), move it into the function. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/scsi/libata-core.c | 108 +++++++------------------------------ 1 file changed, 18 insertions(+), 90 deletions(-) diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index d211f0b1d721..5acb0798534c 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -67,7 +67,6 @@ static void ata_set_mode(struct ata_port *ap); static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev); static unsigned int ata_dev_xfermask(struct ata_port *ap, struct ata_device *dev); -static int fgb(u32 bitmap); static unsigned int ata_unique_id = 1; static struct workqueue_struct *ata_wq; @@ -331,25 +330,6 @@ static int ata_xfer_mode2shift(unsigned int xfer_mode) return -1; } -static const char * const xfer_mode_str[] = { - "PIO0", - "PIO1", - "PIO2", - "PIO3", - "PIO4", - "MWDMA0", - "MWDMA1", - "MWDMA2", - "UDMA/16", - "UDMA/25", - "UDMA/33", - "UDMA/44", - "UDMA/66", - "UDMA/100", - "UDMA/133", - "UDMA7", -}; - /** * ata_mode_string - convert xfer_mask to string * @xfer_mask: mask of bits supported; only highest bit counts. @@ -364,9 +344,26 @@ static const char * const xfer_mode_str[] = { * Constant C string representing highest speed listed in * @mode_mask, or the constant C string "". */ - static const char *ata_mode_string(unsigned int xfer_mask) { + static const char * const xfer_mode_str[] = { + "PIO0", + "PIO1", + "PIO2", + "PIO3", + "PIO4", + "MWDMA0", + "MWDMA1", + "MWDMA2", + "UDMA/16", + "UDMA/25", + "UDMA/33", + "UDMA/44", + "UDMA/66", + "UDMA/100", + "UDMA/133", + "UDMA7", + }; int highbit; highbit = fls(xfer_mask) - 1; @@ -827,35 +824,6 @@ static unsigned int ata_id_xfermask(const u16 *id) return ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask); } -/* - * Compute the PIO modes available for this device. This is not as - * trivial as it seems if we must consider early devices correctly. - * - * FIXME: pre IDE drive timing (do we care ?). - */ - -static unsigned int ata_pio_modes(const struct ata_device *adev) -{ - u16 modes; - - /* Usual case. Word 53 indicates word 64 is valid */ - if (adev->id[ATA_ID_FIELD_VALID] & (1 << 1)) { - modes = adev->id[ATA_ID_PIO_MODES] & 0x03; - modes <<= 3; - modes |= 0x7; - return modes; - } - - /* If word 64 isn't valid then Word 51 high byte holds the PIO timing - number for the maximum. Turn it into a mask and return it */ - modes = (2 << ((adev->id[ATA_ID_OLD_PIO_MODES] >> 8) & 0xFF)) - 1 ; - return modes; - /* But wait.. there's more. Design your standards by committee and - you too can get a free iordy field to process. However its the - speeds not the modes that are supported... Note drivers using the - timing API will get this right anyway */ -} - /** * ata_port_queue_task - Queue port_task * @ap: The ata_port to queue port_task for @@ -1728,26 +1696,6 @@ int ata_timing_compute(struct ata_device *adev, unsigned short speed, return 0; } -static const struct { - unsigned int shift; - u8 base; -} xfer_mode_classes[] = { - { ATA_SHIFT_UDMA, XFER_UDMA_0 }, - { ATA_SHIFT_MWDMA, XFER_MW_DMA_0 }, - { ATA_SHIFT_PIO, XFER_PIO_0 }, -}; - -static u8 base_from_shift(unsigned int shift) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(xfer_mode_classes); i++) - if (xfer_mode_classes[i].shift == shift) - return xfer_mode_classes[i].base; - - return 0xff; -} - static void ata_dev_set_mode(struct ata_port *ap, struct ata_device *dev) { if (!ata_dev_present(dev) || (ap->flags & ATA_FLAG_PORT_DISABLED)) @@ -2596,13 +2544,6 @@ int ata_dev_revalidate(struct ata_port *ap, struct ata_device *dev, return rc; } -static void ata_pr_blacklisted(const struct ata_port *ap, - const struct ata_device *dev) -{ - printk(KERN_WARNING "ata%u: dev %u is on DMA blacklist, disabling DMA\n", - ap->id, dev->devno); -} - static const char * const ata_dma_blacklist [] = { "WDC AC11000H", "WDC AC22100H", @@ -2690,19 +2631,6 @@ static unsigned int ata_dev_xfermask(struct ata_port *ap, return xfer_mask; } -/* find greatest bit */ -static int fgb(u32 bitmap) -{ - unsigned int i; - int x = -1; - - for (i = 0; i < 32; i++) - if (bitmap & (1 << i)) - x = i; - - return x; -} - /** * ata_dev_set_xfermode - Issue SET FEATURES - XFER MODE command * @ap: Port associated with device @dev