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authorChristoph Hellwig <hch@lst.de>2019-02-11 14:25:34 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-02-12 08:51:33 +0100
commit1355cba9c3bae4196f4d9ae4a38ae2f1e9002bea (patch)
tree4475b257ef2c4f88cec1174599e0d9b99c3231e1
parent54b2f300f3862ae57c78f9c080f86b973cf2d8b1 (diff)
tty/synclink: remove ISA support
The ISA support in this driver is horribly outdated and the last driver that passes a NULL dev argument to the DMA mapping routines. Drop the support, if someone wants to go through the work of converting it to a proper isa_driver we can resurrect it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/tty/synclink.c54
1 files changed, 0 insertions, 54 deletions
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c
index d55c858d6058..84f26e43b229 100644
--- a/drivers/tty/synclink.c
+++ b/drivers/tty/synclink.c
@@ -4325,41 +4325,6 @@ static int mgsl_init_tty(void)
return 0;
}
-/* enumerate user specified ISA adapters
- */
-static void mgsl_enum_isa_devices(void)
-{
- struct mgsl_struct *info;
- int i;
-
- /* Check for user specified ISA devices */
-
- for (i=0 ;(i < MAX_ISA_DEVICES) && io[i] && irq[i]; i++){
- if ( debug_level >= DEBUG_LEVEL_INFO )
- printk("ISA device specified io=%04X,irq=%d,dma=%d\n",
- io[i], irq[i], dma[i] );
-
- info = mgsl_allocate_device();
- if ( !info ) {
- /* error allocating device instance data */
- if ( debug_level >= DEBUG_LEVEL_ERROR )
- printk( "can't allocate device instance data.\n");
- continue;
- }
-
- /* Copy user configuration info to device instance data */
- info->io_base = (unsigned int)io[i];
- info->irq_level = (unsigned int)irq[i];
- info->irq_level = irq_canonicalize(info->irq_level);
- info->dma_level = (unsigned int)dma[i];
- info->bus_type = MGSL_BUS_TYPE_ISA;
- info->io_addr_size = 16;
- info->irq_flags = 0;
-
- mgsl_add_device( info );
- }
-}
-
static void synclink_cleanup(void)
{
int rc;
@@ -4403,7 +4368,6 @@ static int __init synclink_init(void)
printk("%s %s\n", driver_name, driver_version);
- mgsl_enum_isa_devices();
if ((rc = pci_register_driver(&synclink_pci_driver)) < 0)
printk("%s:failed to register PCI driver, error=%d\n",__FILE__,rc);
else
@@ -5025,12 +4989,6 @@ static void usc_set_sdlc_mode( struct mgsl_struct *info )
info->mbre_bit = BIT8;
outw( BIT8, info->io_base ); /* set Master Bus Enable (DCAR) */
- if (info->bus_type == MGSL_BUS_TYPE_ISA) {
- /* Enable DMAEN (Port 7, Bit 14) */
- /* This connects the DMA request signal to the ISA bus */
- usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT15) & ~BIT14));
- }
-
/* DMA Control Register (DCR)
*
* <15..14> 10 Priority mode = Alternating Tx/Rx
@@ -6007,12 +5965,6 @@ static void usc_set_async_mode( struct mgsl_struct *info )
usc_EnableMasterIrqBit( info );
- if (info->bus_type == MGSL_BUS_TYPE_ISA) {
- /* Enable INTEN (Port 6, Bit12) */
- /* This connects the IRQ request signal to the ISA bus */
- usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) & ~BIT12));
- }
-
if (info->params.loopback) {
info->loopback_bits = 0x300;
outw(0x0300, info->io_base + CCAR);
@@ -6107,12 +6059,6 @@ static void usc_set_sync_mode( struct mgsl_struct *info )
usc_loopback_frame( info );
usc_set_sdlc_mode( info );
- if (info->bus_type == MGSL_BUS_TYPE_ISA) {
- /* Enable INTEN (Port 6, Bit12) */
- /* This connects the IRQ request signal to the ISA bus */
- usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) & ~BIT12));
- }
-
usc_enable_aux_clock(info, info->params.clock_speed);
if (info->params.loopback)