diff options
Diffstat (limited to 'drivers/isdn/hisax/elsa_ser.c')
| -rw-r--r-- | drivers/isdn/hisax/elsa_ser.c | 659 |
1 files changed, 0 insertions, 659 deletions
diff --git a/drivers/isdn/hisax/elsa_ser.c b/drivers/isdn/hisax/elsa_ser.c deleted file mode 100644 index 999effd7a276..000000000000 --- a/drivers/isdn/hisax/elsa_ser.c +++ /dev/null @@ -1,659 +0,0 @@ -/* $Id: elsa_ser.c,v 2.14.2.3 2004/02/11 13:21:33 keil Exp $ - * - * stuff for the serial modem on ELSA cards - * - * This software may be used and distributed according to the terms - * of the GNU General Public License, incorporated herein by reference. - * - */ - -#include <linux/serial.h> -#include <linux/serial_reg.h> -#include <linux/slab.h> - -#define MAX_MODEM_BUF 256 -#define WAKEUP_CHARS (MAX_MODEM_BUF / 2) -#define RS_ISR_PASS_LIMIT 256 -#define BASE_BAUD (1843200 / 16) - -//#define SERIAL_DEBUG_OPEN 1 -//#define SERIAL_DEBUG_INTR 1 -//#define SERIAL_DEBUG_FLOW 1 -#undef SERIAL_DEBUG_OPEN -#undef SERIAL_DEBUG_INTR -#undef SERIAL_DEBUG_FLOW -#undef SERIAL_DEBUG_REG -//#define SERIAL_DEBUG_REG 1 - -#ifdef SERIAL_DEBUG_REG -static u_char deb[32]; -const char *ModemIn[] = {"RBR", "IER", "IIR", "LCR", "MCR", "LSR", "MSR", "SCR"}; -const char *ModemOut[] = {"THR", "IER", "FCR", "LCR", "MCR", "LSR", "MSR", "SCR"}; -#endif - -static char *MInit_1 = "AT&F&C1E0&D2\r\0"; -static char *MInit_2 = "ATL2M1S64=13\r\0"; -static char *MInit_3 = "AT+FCLASS=0\r\0"; -static char *MInit_4 = "ATV1S2=128X1\r\0"; -static char *MInit_5 = "AT\\V8\\N3\r\0"; -static char *MInit_6 = "ATL0M0&G0%E1\r\0"; -static char *MInit_7 = "AT%L1%M0%C3\r\0"; - -static char *MInit_speed28800 = "AT%G0%B28800\r\0"; - -static char *MInit_dialout = "ATs7=60 x1 d\r\0"; -static char *MInit_dialin = "ATs7=60 x1 a\r\0"; - - -static inline unsigned int serial_in(struct IsdnCardState *cs, int offset) -{ -#ifdef SERIAL_DEBUG_REG - u_int val = inb(cs->hw.elsa.base + 8 + offset); - debugl1(cs, "in %s %02x", ModemIn[offset], val); - return (val); -#else - return inb(cs->hw.elsa.base + 8 + offset); -#endif -} - -static inline unsigned int serial_inp(struct IsdnCardState *cs, int offset) -{ -#ifdef SERIAL_DEBUG_REG -#ifdef ELSA_SERIAL_NOPAUSE_IO - u_int val = inb(cs->hw.elsa.base + 8 + offset); - debugl1(cs, "inp %s %02x", ModemIn[offset], val); -#else - u_int val = inb_p(cs->hw.elsa.base + 8 + offset); - debugl1(cs, "inP %s %02x", ModemIn[offset], val); -#endif - return (val); -#else -#ifdef ELSA_SERIAL_NOPAUSE_IO - return inb(cs->hw.elsa.base + 8 + offset); -#else - return inb_p(cs->hw.elsa.base + 8 + offset); -#endif -#endif -} - -static inline void serial_out(struct IsdnCardState *cs, int offset, int value) -{ -#ifdef SERIAL_DEBUG_REG - debugl1(cs, "out %s %02x", ModemOut[offset], value); -#endif - outb(value, cs->hw.elsa.base + 8 + offset); -} - -static inline void serial_outp(struct IsdnCardState *cs, int offset, - int value) -{ -#ifdef SERIAL_DEBUG_REG -#ifdef ELSA_SERIAL_NOPAUSE_IO - debugl1(cs, "outp %s %02x", ModemOut[offset], value); -#else - debugl1(cs, "outP %s %02x", ModemOut[offset], value); -#endif -#endif -#ifdef ELSA_SERIAL_NOPAUSE_IO - outb(value, cs->hw.elsa.base + 8 + offset); -#else - outb_p(value, cs->hw.elsa.base + 8 + offset); -#endif -} - -/* - * This routine is called to set the UART divisor registers to match - * the specified baud rate for a serial port. - */ -static void change_speed(struct IsdnCardState *cs, int baud) -{ - int quot = 0, baud_base; - unsigned cval, fcr = 0; - - - /* byte size and parity */ - cval = 0x03; - /* Determine divisor based on baud rate */ - baud_base = BASE_BAUD; - quot = baud_base / baud; - /* If the quotient is ever zero, default to 9600 bps */ - if (!quot) - quot = baud_base / 9600; - - /* Set up FIFO's */ - if ((baud_base / quot) < 2400) - fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_1; - else - fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_8; - serial_outp(cs, UART_FCR, fcr); - /* CTS flow control flag and modem status interrupts */ - cs->hw.elsa.IER &= ~UART_IER_MSI; - cs->hw.elsa.IER |= UART_IER_MSI; - serial_outp(cs, UART_IER, cs->hw.elsa.IER); - - debugl1(cs, "modem quot=0x%x", quot); - serial_outp(cs, UART_LCR, cval | UART_LCR_DLAB);/* set DLAB */ - serial_outp(cs, UART_DLL, quot & 0xff); /* LS of divisor */ - serial_outp(cs, UART_DLM, quot >> 8); /* MS of divisor */ - serial_outp(cs, UART_LCR, cval); /* reset DLAB */ - serial_inp(cs, UART_RX); -} - -static int mstartup(struct IsdnCardState *cs) -{ - int retval = 0; - - /* - * Clear the FIFO buffers and disable them - * (they will be reenabled in change_speed()) - */ - serial_outp(cs, UART_FCR, (UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT)); - - /* - * At this point there's no way the LSR could still be 0xFF; - * if it is, then bail out, because there's likely no UART - * here. - */ - if (serial_inp(cs, UART_LSR) == 0xff) { - retval = -ENODEV; - goto errout; - } - - /* - * Clear the interrupt registers. - */ - (void) serial_inp(cs, UART_RX); - (void) serial_inp(cs, UART_IIR); - (void) serial_inp(cs, UART_MSR); - - /* - * Now, initialize the UART - */ - serial_outp(cs, UART_LCR, UART_LCR_WLEN8); /* reset DLAB */ - - cs->hw.elsa.MCR = 0; - cs->hw.elsa.MCR = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2; - serial_outp(cs, UART_MCR, cs->hw.elsa.MCR); - - /* - * Finally, enable interrupts - */ - cs->hw.elsa.IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI; - serial_outp(cs, UART_IER, cs->hw.elsa.IER); /* enable interrupts */ - - /* - * And clear the interrupt registers again for luck. - */ - (void)serial_inp(cs, UART_LSR); - (void)serial_inp(cs, UART_RX); - (void)serial_inp(cs, UART_IIR); - (void)serial_inp(cs, UART_MSR); - - cs->hw.elsa.transcnt = cs->hw.elsa.transp = 0; - cs->hw.elsa.rcvcnt = cs->hw.elsa.rcvp = 0; - - /* - * and set the speed of the serial port - */ - change_speed(cs, BASE_BAUD); - cs->hw.elsa.MFlag = 1; -errout: - return retval; -} - -/* - * This routine will shutdown a serial port; interrupts are disabled, and - * DTR is dropped if the hangup on close termio flag is on. - */ -static void mshutdown(struct IsdnCardState *cs) -{ - -#ifdef SERIAL_DEBUG_OPEN - printk(KERN_DEBUG"Shutting down serial ...."); -#endif - - /* - * clear delta_msr_wait queue to avoid mem leaks: we may free the irq - * here so the queue might never be waken up - */ - - cs->hw.elsa.IER = 0; - serial_outp(cs, UART_IER, 0x00); /* disable all intrs */ - cs->hw.elsa.MCR &= ~UART_MCR_OUT2; - - /* disable break condition */ - serial_outp(cs, UART_LCR, serial_inp(cs, UART_LCR) & ~UART_LCR_SBC); - - cs->hw.elsa.MCR &= ~(UART_MCR_DTR | UART_MCR_RTS); - serial_outp(cs, UART_MCR, cs->hw.elsa.MCR); - - /* disable FIFO's */ - serial_outp(cs, UART_FCR, (UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT)); - serial_inp(cs, UART_RX); /* read data port to reset things */ - -#ifdef SERIAL_DEBUG_OPEN - printk(" done\n"); -#endif -} - -static inline int -write_modem(struct BCState *bcs) { - int ret = 0; - struct IsdnCardState *cs = bcs->cs; - int count, len, fp; - - if (!bcs->tx_skb) - return 0; - if (bcs->tx_skb->len <= 0) - return 0; - len = bcs->tx_skb->len; - if (len > MAX_MODEM_BUF - cs->hw.elsa.transcnt) - len = MAX_MODEM_BUF - cs->hw.elsa.transcnt; - fp = cs->hw.elsa.transcnt + cs->hw.elsa.transp; - fp &= (MAX_MODEM_BUF - 1); - count = len; - if (count > MAX_MODEM_BUF - fp) { - count = MAX_MODEM_BUF - fp; - skb_copy_from_linear_data(bcs->tx_skb, - cs->hw.elsa.transbuf + fp, count); - skb_pull(bcs->tx_skb, count); - cs->hw.elsa.transcnt += count; - ret = count; - count = len - count; - fp = 0; - } - skb_copy_from_linear_data(bcs->tx_skb, - cs->hw.elsa.transbuf + fp, count); - skb_pull(bcs->tx_skb, count); - cs->hw.elsa.transcnt += count; - ret += count; - - if (cs->hw.elsa.transcnt && - !(cs->hw.elsa.IER & UART_IER_THRI)) { - cs->hw.elsa.IER |= UART_IER_THRI; - serial_outp(cs, UART_IER, cs->hw.elsa.IER); - } - return (ret); -} - -static inline void -modem_fill(struct BCState *bcs) { - - if (bcs->tx_skb) { - if (bcs->tx_skb->len) { - write_modem(bcs); - return; - } else { - if (test_bit(FLG_LLI_L1WAKEUP, &bcs->st->lli.flag) && - (PACKET_NOACK != bcs->tx_skb->pkt_type)) { - u_long flags; - spin_lock_irqsave(&bcs->aclock, flags); - bcs->ackcnt += bcs->hw.hscx.count; - spin_unlock_irqrestore(&bcs->aclock, flags); - schedule_event(bcs, B_ACKPENDING); - } - dev_kfree_skb_any(bcs->tx_skb); - bcs->tx_skb = NULL; - } - } - if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) { - bcs->hw.hscx.count = 0; - test_and_set_bit(BC_FLG_BUSY, &bcs->Flag); - write_modem(bcs); - } else { - test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); - schedule_event(bcs, B_XMTBUFREADY); - } -} - -static inline void receive_chars(struct IsdnCardState *cs, - int *status) -{ - unsigned char ch; - struct sk_buff *skb; - - do { - ch = serial_in(cs, UART_RX); - if (cs->hw.elsa.rcvcnt >= MAX_MODEM_BUF) - break; - cs->hw.elsa.rcvbuf[cs->hw.elsa.rcvcnt++] = ch; -#ifdef SERIAL_DEBUG_INTR - printk("DR%02x:%02x...", ch, *status); -#endif - if (*status & (UART_LSR_BI | UART_LSR_PE | - UART_LSR_FE | UART_LSR_OE)) { - -#ifdef SERIAL_DEBUG_INTR - printk("handling exept...."); -#endif - } - *status = serial_inp(cs, UART_LSR); - } while (*status & UART_LSR_DR); - if (cs->hw.elsa.MFlag == 2) { - if (!(skb = dev_alloc_skb(cs->hw.elsa.rcvcnt))) - printk(KERN_WARNING "ElsaSER: receive out of memory\n"); - else { - skb_put_data(skb, cs->hw.elsa.rcvbuf, - cs->hw.elsa.rcvcnt); - skb_queue_tail(&cs->hw.elsa.bcs->rqueue, skb); - } - schedule_event(cs->hw.elsa.bcs, B_RCVBUFREADY); - } else { - char tmp[128]; - char *t = tmp; - - t += sprintf(t, "modem read cnt %d", cs->hw.elsa.rcvcnt); - QuickHex(t, cs->hw.elsa.rcvbuf, cs->hw.elsa.rcvcnt); - debugl1(cs, "%s", tmp); - } - cs->hw.elsa.rcvcnt = 0; -} - -static inline void transmit_chars(struct IsdnCardState *cs, int *intr_done) -{ - int count; - - debugl1(cs, "transmit_chars: p(%x) cnt(%x)", cs->hw.elsa.transp, - cs->hw.elsa.transcnt); - - if (cs->hw.elsa.transcnt <= 0) { - cs->hw.elsa.IER &= ~UART_IER_THRI; - serial_out(cs, UART_IER, cs->hw.elsa.IER); - return; - } - count = 16; - do { - serial_outp(cs, UART_TX, cs->hw.elsa.transbuf[cs->hw.elsa.transp++]); - if (cs->hw.elsa.transp >= MAX_MODEM_BUF) - cs->hw.elsa.transp = 0; - if (--cs->hw.elsa.transcnt <= 0) - break; - } while (--count > 0); - if ((cs->hw.elsa.transcnt < WAKEUP_CHARS) && (cs->hw.elsa.MFlag == 2)) - modem_fill(cs->hw.elsa.bcs); - -#ifdef SERIAL_DEBUG_INTR - printk("THRE..."); -#endif - if (intr_done) - *intr_done = 0; - if (cs->hw.elsa.transcnt <= 0) { - cs->hw.elsa.IER &= ~UART_IER_THRI; - serial_outp(cs, UART_IER, cs->hw.elsa.IER); - } -} - - -static void rs_interrupt_elsa(struct IsdnCardState *cs) -{ - int status, iir, msr; - int pass_counter = 0; - -#ifdef SERIAL_DEBUG_INTR - printk(KERN_DEBUG "rs_interrupt_single(%d)...", cs->irq); -#endif - - do { - status = serial_inp(cs, UART_LSR); - debugl1(cs, "rs LSR %02x", status); -#ifdef SERIAL_DEBUG_INTR - printk("status = %x...", status); -#endif - if (status & UART_LSR_DR) - receive_chars(cs, &status); - if (status & UART_LSR_THRE) - transmit_chars(cs, NULL); - if (pass_counter++ > RS_ISR_PASS_LIMIT) { - printk("rs_single loop break.\n"); - break; - } - iir = serial_inp(cs, UART_IIR); - debugl1(cs, "rs IIR %02x", iir); - if ((iir & 0xf) == 0) { - msr = serial_inp(cs, UART_MSR); - debugl1(cs, "rs MSR %02x", msr); - } - } while (!(iir & UART_IIR_NO_INT)); -#ifdef SERIAL_DEBUG_INTR - printk("end.\n"); -#endif -} - -extern int open_hscxstate(struct IsdnCardState *cs, struct BCState *bcs); -extern void modehscx(struct BCState *bcs, int mode, int bc); -extern void hscx_l2l1(struct PStack *st, int pr, void *arg); - -static void -close_elsastate(struct BCState *bcs) -{ - modehscx(bcs, 0, bcs->channel); - if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) { - if (bcs->hw.hscx.rcvbuf) { - if (bcs->mode != L1_MODE_MODEM) - kfree(bcs->hw.hscx.rcvbuf); - bcs->hw.hscx.rcvbuf = NULL; - } - skb_queue_purge(&bcs->rqueue); - skb_queue_purge(&bcs->squeue); - if (bcs->tx_skb) { - dev_kfree_skb_any(bcs->tx_skb); - bcs->tx_skb = NULL; - test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); - } - } -} - -static void -modem_write_cmd(struct IsdnCardState *cs, u_char *buf, int len) { - int count, fp; - u_char *msg = buf; - - if (!len) - return; - if (len > (MAX_MODEM_BUF - cs->hw.elsa.transcnt)) { - return; - } - fp = cs->hw.elsa.transcnt + cs->hw.elsa.transp; - fp &= (MAX_MODEM_BUF - 1); - count = len; - if (count > MAX_MODEM_BUF - fp) { - count = MAX_MODEM_BUF - fp; - memcpy(cs->hw.elsa.transbuf + fp, msg, count); - cs->hw.elsa.transcnt += count; - msg += count; - count = len - count; - fp = 0; - } - memcpy(cs->hw.elsa.transbuf + fp, msg, count); - cs->hw.elsa.transcnt += count; - if (cs->hw.elsa.transcnt && - !(cs->hw.elsa.IER & UART_IER_THRI)) { - cs->hw.elsa.IER |= UART_IER_THRI; - serial_outp(cs, UART_IER, cs->hw.elsa.IER); - } -} - -static void -modem_set_init(struct IsdnCardState *cs) { - int timeout; - -#define RCV_DELAY 20 - modem_write_cmd(cs, MInit_1, strlen(MInit_1)); - timeout = 1000; - while (timeout-- && cs->hw.elsa.transcnt) - udelay(1000); - debugl1(cs, "msi tout=%d", timeout); - mdelay(RCV_DELAY); - modem_write_cmd(cs, MInit_2, strlen(MInit_2)); - timeout = 1000; - while (timeout-- && cs->hw.elsa.transcnt) - udelay(1000); - debugl1(cs, "msi tout=%d", timeout); - mdelay(RCV_DELAY); - modem_write_cmd(cs, MInit_3, strlen(MInit_3)); - timeout = 1000; - while (timeout-- && cs->hw.elsa.transcnt) - udelay(1000); - debugl1(cs, "msi tout=%d", timeout); - mdelay(RCV_DELAY); - modem_write_cmd(cs, MInit_4, strlen(MInit_4)); - timeout = 1000; - while (timeout-- && cs->hw.elsa.transcnt) - udelay(1000); - debugl1(cs, "msi tout=%d", timeout); - mdelay(RCV_DELAY); - modem_write_cmd(cs, MInit_5, strlen(MInit_5)); - timeout = 1000; - while (timeout-- && cs->hw.elsa.transcnt) - udelay(1000); - debugl1(cs, "msi tout=%d", timeout); - mdelay(RCV_DELAY); - modem_write_cmd(cs, MInit_6, strlen(MInit_6)); - timeout = 1000; - while (timeout-- && cs->hw.elsa.transcnt) - udelay(1000); - debugl1(cs, "msi tout=%d", timeout); - mdelay(RCV_DELAY); - modem_write_cmd(cs, MInit_7, strlen(MInit_7)); - timeout = 1000; - while (timeout-- && cs->hw.elsa.transcnt) - udelay(1000); - debugl1(cs, "msi tout=%d", timeout); - mdelay(RCV_DELAY); -} - -static void -modem_set_dial(struct IsdnCardState *cs, int outgoing) { - int timeout; -#define RCV_DELAY 20 - - modem_write_cmd(cs, MInit_speed28800, strlen(MInit_speed28800)); - timeout = 1000; - while (timeout-- && cs->hw.elsa.transcnt) - udelay(1000); - debugl1(cs, "msi tout=%d", timeout); - mdelay(RCV_DELAY); - if (outgoing) - modem_write_cmd(cs, MInit_dialout, strlen(MInit_dialout)); - else - modem_write_cmd(cs, MInit_dialin, strlen(MInit_dialin)); - timeout = 1000; - while (timeout-- && cs->hw.elsa.transcnt) - udelay(1000); - debugl1(cs, "msi tout=%d", timeout); - mdelay(RCV_DELAY); -} - -static void -modem_l2l1(struct PStack *st, int pr, void *arg) -{ - struct BCState *bcs = st->l1.bcs; - struct sk_buff *skb = arg; - u_long flags; - - if (pr == (PH_DATA | REQUEST)) { - spin_lock_irqsave(&bcs->cs->lock, flags); - if (bcs->tx_skb) { - skb_queue_tail(&bcs->squeue, skb); - } else { - bcs->tx_skb = skb; - test_and_set_bit(BC_FLG_BUSY, &bcs->Flag); - bcs->hw.hscx.count = 0; - write_modem(bcs); - } - spin_unlock_irqrestore(&bcs->cs->lock, flags); - } else if (pr == (PH_ACTIVATE | REQUEST)) { - test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag); - st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL); - set_arcofi(bcs->cs, st->l1.bc); - mstartup(bcs->cs); - modem_set_dial(bcs->cs, test_bit(FLG_ORIG, &st->l2.flag)); - bcs->cs->hw.elsa.MFlag = 2; - } else if (pr == (PH_DEACTIVATE | REQUEST)) { - test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag); - bcs->cs->dc.isac.arcofi_bc = st->l1.bc; - arcofi_fsm(bcs->cs, ARCOFI_START, &ARCOFI_XOP_0); - wait_event_interruptible(bcs->cs->dc.isac.arcofi_wait, - bcs->cs->dc.isac.arcofi_state == ARCOFI_NOP); - bcs->cs->hw.elsa.MFlag = 1; - } else { - printk(KERN_WARNING "ElsaSer: unknown pr %x\n", pr); - } -} - -static int -setstack_elsa(struct PStack *st, struct BCState *bcs) -{ - - bcs->channel = st->l1.bc; - switch (st->l1.mode) { - case L1_MODE_HDLC: - case L1_MODE_TRANS: - if (open_hscxstate(st->l1.hardware, bcs)) - return (-1); - st->l2.l2l1 = hscx_l2l1; - break; - case L1_MODE_MODEM: - bcs->mode = L1_MODE_MODEM; - if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) { - bcs->hw.hscx.rcvbuf = bcs->cs->hw.elsa.rcvbuf; - skb_queue_head_init(&bcs->rqueue); - skb_queue_head_init(&bcs->squeue); - } - bcs->tx_skb = NULL; - test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); - bcs->event = 0; - bcs->hw.hscx.rcvidx = 0; - bcs->tx_cnt = 0; - bcs->cs->hw.elsa.bcs = bcs; - st->l2.l2l1 = modem_l2l1; - break; - } - st->l1.bcs = bcs; - setstack_manager(st); - bcs->st = st; - setstack_l1_B(st); - return (0); -} - -static void -init_modem(struct IsdnCardState *cs) { - - cs->bcs[0].BC_SetStack = setstack_elsa; - cs->bcs[1].BC_SetStack = setstack_elsa; - cs->bcs[0].BC_Close = close_elsastate; - cs->bcs[1].BC_Close = close_elsastate; - if (!(cs->hw.elsa.rcvbuf = kmalloc(MAX_MODEM_BUF, - GFP_ATOMIC))) { - printk(KERN_WARNING - "Elsa: No modem mem hw.elsa.rcvbuf\n"); - return; - } - if (!(cs->hw.elsa.transbuf = kmalloc(MAX_MODEM_BUF, - GFP_ATOMIC))) { - printk(KERN_WARNING - "Elsa: No modem mem hw.elsa.transbuf\n"); - kfree(cs->hw.elsa.rcvbuf); - cs->hw.elsa.rcvbuf = NULL; - return; - } - if (mstartup(cs)) { - printk(KERN_WARNING "Elsa: problem startup modem\n"); - } - modem_set_init(cs); -} - -static void -release_modem(struct IsdnCardState *cs) { - - cs->hw.elsa.MFlag = 0; - if (cs->hw.elsa.transbuf) { - if (cs->hw.elsa.rcvbuf) { - mshutdown(cs); - kfree(cs->hw.elsa.rcvbuf); - cs->hw.elsa.rcvbuf = NULL; - } - kfree(cs->hw.elsa.transbuf); - cs->hw.elsa.transbuf = NULL; - } -} |