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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The ISA support in this driver is horribly outdated and the last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>
This commit is contained in:
Christoph Hellwig 2019-02-11 14:25:34 +01:00 committed by Greg Kroah-Hartman
parent 54b2f300f3
commit 1355cba9c3
1 changed files with 0 additions and 54 deletions
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54
drivers/tty/synclink.c
View File

@ -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)