[PATCH] yenta: don't mess with bridge control register

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / pcmcia / yenta_socket.c

diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c
index fd2a6f892c41b291ed054854544ab9b2c204581c..53a02f0858009b936fcf3dd945bddc74b48ca3f0 100644 (file)
--- a/drivers/pcmcia/yenta_socket.c
+++ b/drivers/pcmcia/yenta_socket.c
@@ -559,12 +559,6 @@ static void yenta_interrogate(struct yenta_socket *socket)
 static int yenta_sock_init(struct pcmcia_socket *sock)
 {
        struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
-       u16 bridge;
-
-       bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~CB_BRIDGE_INTR;
-       if (!socket->cb_irq)
-               bridge |= CB_BRIDGE_INTR;
-       config_writew(socket, CB_BRIDGE_CONTROL, bridge);
 
        exca_writeb(socket, I365_GBLCTL, 0x00);
        exca_writeb(socket, I365_GENCTL, 0x00);
@@ -890,16 +884,8 @@ static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mas
 {
        int i;
        unsigned long val;
-       u16 bridge_ctrl;
        u32 mask;
 
-       /* Set up ISA irq routing to probe the ISA irqs.. */
-       bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
-       if (!(bridge_ctrl & CB_BRIDGE_INTR)) {
-               bridge_ctrl |= CB_BRIDGE_INTR;
-               config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
-       }
-
        /*
         * Probe for usable interrupts using the force
         * register to generate bogus card status events.
@@ -921,9 +907,6 @@ static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mas
 
        mask = probe_irq_mask(val) & 0xffff;
 
-       bridge_ctrl &= ~CB_BRIDGE_INTR;
-       config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
-
        return mask;
 }
 
@@ -951,18 +934,11 @@ static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *re
 /* probes the PCI interrupt, use only on override functions */
 static int yenta_probe_cb_irq(struct yenta_socket *socket)
 {
-       u16 bridge_ctrl;
-
        if (!socket->cb_irq)
                return -1;
 
        socket->probe_status = 0;
 
-       /* disable ISA interrupts */
-       bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
-       bridge_ctrl &= ~CB_BRIDGE_INTR;
-       config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
-
        if (request_irq(socket->cb_irq, yenta_probe_handler, SA_SHIRQ, "yenta", socket)) {
                printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n");
                return -1;
@@ -973,7 +949,7 @@ static int yenta_probe_cb_irq(struct yenta_socket *socket)
        cb_writel(socket, CB_SOCKET_EVENT, -1);
        cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
        cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
-       
+
        msleep(100);
 
        /* disable interrupts */
@@ -1038,8 +1014,8 @@ static void yenta_config_init(struct yenta_socket *socket)
         *  - PCI interrupts enabled if a PCI interrupt exists..
         */
        bridge = config_readw(socket, CB_BRIDGE_CONTROL);
-       bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_INTR | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
-       bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN | CB_BRIDGE_INTR;
+       bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
+       bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
        config_writew(socket, CB_BRIDGE_CONTROL, bridge);
 }