3 files changed, 2 insertions, 20 deletions

diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c
index 5b149b466ec8..56492d208a7a 100644
--- a/drivers/tty/serial/8250/8250.c
+++ b/drivers/tty/serial/8250/8250.c
@@ -1572,13 +1572,11 @@ static irqreturn_t serial8250_interrupt(int irq, void *dev_id)
         do {
                 struct uart_8250_port *up;
                 struct uart_port *port;
-                bool skip;
 
                 up = list_entry(l, struct uart_8250_port, list);
                 port = &up->port;
-                skip = pass_counter && up->port.flags & UPF_IIR_ONCE;
 
-                if (!skip && port->handle_irq(port)) {
+                if (port->handle_irq(port)) {
                         handled = 1;
                         end = NULL;
                 } else if (end == NULL)
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 1d4ccf8c8874..105dcfbd3d33 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -1092,14 +1092,6 @@ static int skip_tx_en_setup(struct serial_private *priv,
         return pci_default_setup(priv, board, port, idx);
 }
 
-static int kt_serial_setup(struct serial_private *priv,
-                           const struct pciserial_board *board,
-                           struct uart_port *port, int idx)
-{
-        port->flags |= UPF_IIR_ONCE;
-        return skip_tx_en_setup(priv, board, port, idx);
-}
-
 static int pci_eg20t_init(struct pci_dev *dev)
 {
 #if defined(CONFIG_SERIAL_PCH_UART) || defined(CONFIG_SERIAL_PCH_UART_MODULE)
@@ -1118,6 +1110,7 @@ pci_xr17c154_setup(struct serial_private *priv,
         return pci_default_setup(priv, board, port, idx);
 }
 
+/* This should be in linux/pci_ids.h */
 #define PCI_VENDOR_ID_SBSMODULARIO      0x124B
 #define PCI_SUBVENDOR_ID_SBSMODULARIO   0x124B
 #define PCI_DEVICE_ID_OCTPRO            0x0001
@@ -1147,7 +1140,6 @@ pci_xr17c154_setup(struct serial_private *priv,
 #define PCI_DEVICE_ID_OXSEMI_16PCI958   0x9538
 #define PCIE_DEVICE_ID_NEO_2_OX_IBM     0x00F6
 #define PCI_DEVICE_ID_PLX_CRONYX_OMEGA  0xc001
-#define PCI_DEVICE_ID_INTEL_PATSBURG_KT 0x1d3d
 
 /* Unknown vendors/cards - this should not be in linux/pci_ids.h */
 #define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584
@@ -1232,13 +1224,6 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
                 .subdevice      = PCI_ANY_ID,
                 .setup          = ce4100_serial_setup,
         },
-        {
-                .vendor         = PCI_VENDOR_ID_INTEL,
-                .device         = PCI_DEVICE_ID_INTEL_PATSBURG_KT,
-                .subvendor      = PCI_ANY_ID,
-                .subdevice      = PCI_ANY_ID,
-                .setup          = kt_serial_setup,
-        },
         /*
          * ITE
          */
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index f51bf2e70c69..882f1d61aa56 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -357,7 +357,6 @@ struct uart_port {
 #define UPF_CONS_FLOW           ((__force upf_t) (1 << 23))
 #define UPF_SHARE_IRQ           ((__force upf_t) (1 << 24))
 #define UPF_EXAR_EFR            ((__force upf_t) (1 << 25))
-#define UPF_IIR_ONCE            ((__force upf_t) (1 << 26))
 /* The exact UART type is known and should not be probed.  */
 #define UPF_FIXED_TYPE          ((__force upf_t) (1 << 27))
 #define UPF_BOOT_AUTOCONF       ((__force upf_t) (1 << 28))