Merge tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Fix error output of boot instance creation failure

   Currently if a boot instance creation fails, instead of printing out
   the name of the instance that failed, it prints "(null)". That is
   because it prints "cur_str" that had already been processed by
   strsep(). Print the saved name instead.

   While at it, print the error code of the failure.

 - Fix use-after-free for same named historgrams

   Histograms can be named so that they can be used in multiple events.
   But if the named histogram has a variable attached, the second event
   that uses the named histogram which duplicates it and needs to free
   the original after duplication leaves the old variable in place and
   still visible. If another histogram uses than variable, it will use
   the stale one which will try to reference the freed duplicate
   histogram and crash the kernel.

   Free the duplicate variables along with the duplicated histogram
   data.

 - Check return value of kthread_run() in event self test

   The events self tests uses a kthread for testing but does not check
   if it succeeded in creating a kthread. If the kthread creation were
   to fail, the code will still try to call kthread_stop() on the error
   returned.

 - Fix race between reading trace_pipe and updating subbuffer size

   If a user is reading the trace_pipe file at the same time they update
   the ring buffer sub-buffer size, can cause the trace_pipe read to
   read stale data. Add trace_access_lock() around updating the ring
   buffer sub-buffer size.

 - Fix eventfs_inode on failure path in creation of the events directory

   In the creation of the "events" directory, if after allocating the
   eventfs_inode a failure is detected, it calls cleanup_ei() which
   calls free_ei(). The free_ei() will test if eventfs_inode being freed
   has no children. It is a bug if it does. But on the failure case of
   the creation of the "events" directory, the children lists have not
   yet been initialized and the free will trigger a warning because
   list_empty() on an uninitialized list returns false.

   Move the initialization into init_ei() where it makes more sense and
   makes sure that a created eventfs_inode has its lists initialized
   upon creation.

 - Check return value of kthread_run() in ftrace direct sample code

   The sample code that shows how to use the ftrace direct calls does
   not test the return of kthread_run() to see if it succeeds. Return a
   failure if the kthread_run() doesn't succeed.

 - Clear user events state on fork in case of alloc failure

   On fork, the child gets a pointer to the parent's user events state.
   It makes a copy of it then updates the child's pointer to it. But if
   the allocation fails, the duplication function leaves the child with
   a pointer to its parent's descriptor. When the child cleans up its
   data, it will free the parent's descriptor while the parent is still
   using it.

   In the duplication function, set the child's user_event_mm to NULL
   before testing if the allocation succeeded, and when it exits it will
   not free the parent's descriptor.

 - Fix retry exhaustion in simple ring buffer reader swap

   simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
   post-decrements it only after a failed link replacement. On the final
   attempt, a successful replacement leaves retry at zero, while a
   failed replacement leaves it at -1.

   But the check for success expects the retry value to be non-zero and
   exits with an error on zero. This is the opposite result. Fix it.

 - Fail nicely when the remote swap_reader_page() returns an error

   Currently, if the swap_reader_page() of a remote buffer fails, it
   triggers a WARN_ON_ONCE() and continues normally. Instead, have it
   exit with an error and a pr_warn() print instead of a full WARNING.

* tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Stop remote reader update when page swap fails
  tracing: Fix retry exhaustion in simple ring buffer reader swap
  tracing/user_events: Clear copied tracing state before fork duplication
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify
  eventfs: Initialize ei->children and ei->list in init_ei()
  tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
  tracing: Fix crash passing ERR_PTR to kthread_stop()
  tracing: Fix use-after-free with same-name named triggers
  tracing: Fix logged instance name on creation failure

1 files changed, 613 insertions, 0 deletions

diff --git a/drivers/scsi/sun_esp.c b/drivers/scsi/sun_esp.c
new file mode 100644
index 000000000..aa430501f
--- /dev/null
+++ b/drivers/scsi/sun_esp.c
@@ -0,0 +1,613 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* sun_esp.c: ESP front-end for Sparc SBUS systems.
+ *
+ * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/dma-mapping.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/gfp.h>
+
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#include <scsi/scsi_host.h>
+
+#include "esp_scsi.h"
+
+#define DRV_MODULE_NAME		"sun_esp"
+#define PFX DRV_MODULE_NAME	": "
+#define DRV_VERSION		"1.100"
+#define DRV_MODULE_RELDATE	"August 27, 2008"
+
+#define dma_read32(REG) \
+	sbus_readl(esp->dma_regs + (REG))
+#define dma_write32(VAL, REG) \
+	sbus_writel((VAL), esp->dma_regs + (REG))
+
+/* DVMA chip revisions */
+enum dvma_rev {
+	dvmarev0,
+	dvmaesc1,
+	dvmarev1,
+	dvmarev2,
+	dvmarev3,
+	dvmarevplus,
+	dvmahme
+};
+
+static int esp_sbus_setup_dma(struct esp *esp, struct platform_device *dma_of)
+{
+	esp->dma = dma_of;
+
+	esp->dma_regs = of_ioremap(&dma_of->resource[0], 0,
+				   resource_size(&dma_of->resource[0]),
+				   "espdma");
+	if (!esp->dma_regs)
+		return -ENOMEM;
+
+	switch (dma_read32(DMA_CSR) & DMA_DEVICE_ID) {
+	case DMA_VERS0:
+		esp->dmarev = dvmarev0;
+		break;
+	case DMA_ESCV1:
+		esp->dmarev = dvmaesc1;
+		break;
+	case DMA_VERS1:
+		esp->dmarev = dvmarev1;
+		break;
+	case DMA_VERS2:
+		esp->dmarev = dvmarev2;
+		break;
+	case DMA_VERHME:
+		esp->dmarev = dvmahme;
+		break;
+	case DMA_VERSPLUS:
+		esp->dmarev = dvmarevplus;
+		break;
+	}
+
+	return 0;
+
+}
+
+static int esp_sbus_map_regs(struct esp *esp, int hme)
+{
+	struct platform_device *op = to_platform_device(esp->dev);
+	struct resource *res;
+
+	/* On HME, two reg sets exist, first is DVMA,
+	 * second is ESP registers.
+	 */
+	if (hme)
+		res = &op->resource[1];
+	else
+		res = &op->resource[0];
+
+	esp->regs = of_ioremap(res, 0, SBUS_ESP_REG_SIZE, "ESP");
+	if (!esp->regs)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static int esp_sbus_map_command_block(struct esp *esp)
+{
+	esp->command_block = dma_alloc_coherent(esp->dev, 16,
+						&esp->command_block_dma,
+						GFP_KERNEL);
+	if (!esp->command_block)
+		return -ENOMEM;
+	return 0;
+}
+
+static int esp_sbus_register_irq(struct esp *esp)
+{
+	struct Scsi_Host *host = esp->host;
+	struct platform_device *op = to_platform_device(esp->dev);
+
+	host->irq = op->archdata.irqs[0];
+	return request_irq(host->irq, scsi_esp_intr, IRQF_SHARED, "ESP", esp);
+}
+
+static void esp_get_scsi_id(struct esp *esp, struct platform_device *espdma)
+{
+	struct platform_device *op = to_platform_device(esp->dev);
+	struct device_node *dp;
+
+	dp = op->dev.of_node;
+	esp->scsi_id = of_getintprop_default(dp, "initiator-id", 0xff);
+	if (esp->scsi_id != 0xff)
+		goto done;
+
+	esp->scsi_id = of_getintprop_default(dp, "scsi-initiator-id", 0xff);
+	if (esp->scsi_id != 0xff)
+		goto done;
+
+	esp->scsi_id = of_getintprop_default(espdma->dev.of_node,
+					     "scsi-initiator-id", 7);
+
+done:
+	esp->host->this_id = esp->scsi_id;
+	esp->scsi_id_mask = (1 << esp->scsi_id);
+}
+
+static void esp_get_differential(struct esp *esp)
+{
+	struct platform_device *op = to_platform_device(esp->dev);
+	struct device_node *dp;
+
+	dp = op->dev.of_node;
+	if (of_property_read_bool(dp, "differential"))
+		esp->flags |= ESP_FLAG_DIFFERENTIAL;
+	else
+		esp->flags &= ~ESP_FLAG_DIFFERENTIAL;
+}
+
+static void esp_get_clock_params(struct esp *esp)
+{
+	struct platform_device *op = to_platform_device(esp->dev);
+	struct device_node *bus_dp, *dp;
+	int fmhz;
+
+	dp = op->dev.of_node;
+	bus_dp = dp->parent;
+
+	fmhz = of_getintprop_default(dp, "clock-frequency", 0);
+	if (fmhz == 0)
+		fmhz = of_getintprop_default(bus_dp, "clock-frequency", 0);
+
+	esp->cfreq = fmhz;
+}
+
+static void esp_get_bursts(struct esp *esp, struct platform_device *dma_of)
+{
+	struct device_node *dma_dp = dma_of->dev.of_node;
+	struct platform_device *op = to_platform_device(esp->dev);
+	struct device_node *dp;
+	u8 bursts, val;
+
+	dp = op->dev.of_node;
+	bursts = of_getintprop_default(dp, "burst-sizes", 0xff);
+	val = of_getintprop_default(dma_dp, "burst-sizes", 0xff);
+	if (val != 0xff)
+		bursts &= val;
+
+	val = of_getintprop_default(dma_dp->parent, "burst-sizes", 0xff);
+	if (val != 0xff)
+		bursts &= val;
+
+	if (bursts == 0xff ||
+	    (bursts & DMA_BURST16) == 0 ||
+	    (bursts & DMA_BURST32) == 0)
+		bursts = (DMA_BURST32 - 1);
+
+	esp->bursts = bursts;
+}
+
+static void esp_sbus_get_props(struct esp *esp, struct platform_device *espdma)
+{
+	esp_get_scsi_id(esp, espdma);
+	esp_get_differential(esp);
+	esp_get_clock_params(esp);
+	esp_get_bursts(esp, espdma);
+}
+
+static void sbus_esp_write8(struct esp *esp, u8 val, unsigned long reg)
+{
+	sbus_writeb(val, esp->regs + (reg * 4UL));
+}
+
+static u8 sbus_esp_read8(struct esp *esp, unsigned long reg)
+{
+	return sbus_readb(esp->regs + (reg * 4UL));
+}
+
+static int sbus_esp_irq_pending(struct esp *esp)
+{
+	if (dma_read32(DMA_CSR) & (DMA_HNDL_INTR | DMA_HNDL_ERROR))
+		return 1;
+	return 0;
+}
+
+static void sbus_esp_reset_dma(struct esp *esp)
+{
+	int can_do_burst16, can_do_burst32, can_do_burst64;
+	int can_do_sbus64, lim;
+	struct platform_device *op = to_platform_device(esp->dev);
+	u32 val;
+
+	can_do_burst16 = (esp->bursts & DMA_BURST16) != 0;
+	can_do_burst32 = (esp->bursts & DMA_BURST32) != 0;
+	can_do_burst64 = 0;
+	can_do_sbus64 = 0;
+	if (sbus_can_dma_64bit())
+		can_do_sbus64 = 1;
+	if (sbus_can_burst64())
+		can_do_burst64 = (esp->bursts & DMA_BURST64) != 0;
+
+	/* Put the DVMA into a known state. */
+	if (esp->dmarev != dvmahme) {
+		val = dma_read32(DMA_CSR);
+		dma_write32(val | DMA_RST_SCSI, DMA_CSR);
+		dma_write32(val & ~DMA_RST_SCSI, DMA_CSR);
+	}
+	switch (esp->dmarev) {
+	case dvmahme:
+		dma_write32(DMA_RESET_FAS366, DMA_CSR);
+		dma_write32(DMA_RST_SCSI, DMA_CSR);
+
+		esp->prev_hme_dmacsr = (DMA_PARITY_OFF | DMA_2CLKS |
+					DMA_SCSI_DISAB | DMA_INT_ENAB);
+
+		esp->prev_hme_dmacsr &= ~(DMA_ENABLE | DMA_ST_WRITE |
+					  DMA_BRST_SZ);
+
+		if (can_do_burst64)
+			esp->prev_hme_dmacsr |= DMA_BRST64;
+		else if (can_do_burst32)
+			esp->prev_hme_dmacsr |= DMA_BRST32;
+
+		if (can_do_sbus64) {
+			esp->prev_hme_dmacsr |= DMA_SCSI_SBUS64;
+			sbus_set_sbus64(&op->dev, esp->bursts);
+		}
+
+		lim = 1000;
+		while (dma_read32(DMA_CSR) & DMA_PEND_READ) {
+			if (--lim == 0) {
+				printk(KERN_ALERT PFX "esp%d: DMA_PEND_READ "
+				       "will not clear!\n",
+				       esp->host->unique_id);
+				break;
+			}
+			udelay(1);
+		}
+
+		dma_write32(0, DMA_CSR);
+		dma_write32(esp->prev_hme_dmacsr, DMA_CSR);
+
+		dma_write32(0, DMA_ADDR);
+		break;
+
+	case dvmarev2:
+		if (esp->rev != ESP100) {
+			val = dma_read32(DMA_CSR);
+			dma_write32(val | DMA_3CLKS, DMA_CSR);
+		}
+		break;
+
+	case dvmarev3:
+		val = dma_read32(DMA_CSR);
+		val &= ~DMA_3CLKS;
+		val |= DMA_2CLKS;
+		if (can_do_burst32) {
+			val &= ~DMA_BRST_SZ;
+			val |= DMA_BRST32;
+		}
+		dma_write32(val, DMA_CSR);
+		break;
+
+	case dvmaesc1:
+		val = dma_read32(DMA_CSR);
+		val |= DMA_ADD_ENABLE;
+		val &= ~DMA_BCNT_ENAB;
+		if (!can_do_burst32 && can_do_burst16) {
+			val |= DMA_ESC_BURST;
+		} else {
+			val &= ~(DMA_ESC_BURST);
+		}
+		dma_write32(val, DMA_CSR);
+		break;
+
+	default:
+		break;
+	}
+
+	/* Enable interrupts.  */
+	val = dma_read32(DMA_CSR);
+	dma_write32(val | DMA_INT_ENAB, DMA_CSR);
+}
+
+static void sbus_esp_dma_drain(struct esp *esp)
+{
+	u32 csr;
+	int lim;
+
+	if (esp->dmarev == dvmahme)
+		return;
+
+	csr = dma_read32(DMA_CSR);
+	if (!(csr & DMA_FIFO_ISDRAIN))
+		return;
+
+	if (esp->dmarev != dvmarev3 && esp->dmarev != dvmaesc1)
+		dma_write32(csr | DMA_FIFO_STDRAIN, DMA_CSR);
+
+	lim = 1000;
+	while (dma_read32(DMA_CSR) & DMA_FIFO_ISDRAIN) {
+		if (--lim == 0) {
+			printk(KERN_ALERT PFX "esp%d: DMA will not drain!\n",
+			       esp->host->unique_id);
+			break;
+		}
+		udelay(1);
+	}
+}
+
+static void sbus_esp_dma_invalidate(struct esp *esp)
+{
+	if (esp->dmarev == dvmahme) {
+		dma_write32(DMA_RST_SCSI, DMA_CSR);
+
+		esp->prev_hme_dmacsr = ((esp->prev_hme_dmacsr |
+					 (DMA_PARITY_OFF | DMA_2CLKS |
+					  DMA_SCSI_DISAB | DMA_INT_ENAB)) &
+					~(DMA_ST_WRITE | DMA_ENABLE));
+
+		dma_write32(0, DMA_CSR);
+		dma_write32(esp->prev_hme_dmacsr, DMA_CSR);
+
+		/* This is necessary to avoid having the SCSI channel
+		 * engine lock up on us.
+		 */
+		dma_write32(0, DMA_ADDR);
+	} else {
+		u32 val;
+		int lim;
+
+		lim = 1000;
+		while ((val = dma_read32(DMA_CSR)) & DMA_PEND_READ) {
+			if (--lim == 0) {
+				printk(KERN_ALERT PFX "esp%d: DMA will not "
+				       "invalidate!\n", esp->host->unique_id);
+				break;
+			}
+			udelay(1);
+		}
+
+		val &= ~(DMA_ENABLE | DMA_ST_WRITE | DMA_BCNT_ENAB);
+		val |= DMA_FIFO_INV;
+		dma_write32(val, DMA_CSR);
+		val &= ~DMA_FIFO_INV;
+		dma_write32(val, DMA_CSR);
+	}
+}
+
+static void sbus_esp_send_dma_cmd(struct esp *esp, u32 addr, u32 esp_count,
+				  u32 dma_count, int write, u8 cmd)
+{
+	u32 csr;
+
+	BUG_ON(!(cmd & ESP_CMD_DMA));
+
+	sbus_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW);
+	sbus_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED);
+	if (esp->rev == FASHME) {
+		sbus_esp_write8(esp, (esp_count >> 16) & 0xff, FAS_RLO);
+		sbus_esp_write8(esp, 0, FAS_RHI);
+
+		scsi_esp_cmd(esp, cmd);
+
+		csr = esp->prev_hme_dmacsr;
+		csr |= DMA_SCSI_DISAB | DMA_ENABLE;
+		if (write)
+			csr |= DMA_ST_WRITE;
+		else
+			csr &= ~DMA_ST_WRITE;
+		esp->prev_hme_dmacsr = csr;
+
+		dma_write32(dma_count, DMA_COUNT);
+		dma_write32(addr, DMA_ADDR);
+		dma_write32(csr, DMA_CSR);
+	} else {
+		csr = dma_read32(DMA_CSR);
+		csr |= DMA_ENABLE;
+		if (write)
+			csr |= DMA_ST_WRITE;
+		else
+			csr &= ~DMA_ST_WRITE;
+		dma_write32(csr, DMA_CSR);
+		if (esp->dmarev == dvmaesc1) {
+			u32 end = PAGE_ALIGN(addr + dma_count + 16U);
+			dma_write32(end - addr, DMA_COUNT);
+		}
+		dma_write32(addr, DMA_ADDR);
+
+		scsi_esp_cmd(esp, cmd);
+	}
+
+}
+
+static int sbus_esp_dma_error(struct esp *esp)
+{
+	u32 csr = dma_read32(DMA_CSR);
+
+	if (csr & DMA_HNDL_ERROR)
+		return 1;
+
+	return 0;
+}
+
+static const struct esp_driver_ops sbus_esp_ops = {
+	.esp_write8	=	sbus_esp_write8,
+	.esp_read8	=	sbus_esp_read8,
+	.irq_pending	=	sbus_esp_irq_pending,
+	.reset_dma	=	sbus_esp_reset_dma,
+	.dma_drain	=	sbus_esp_dma_drain,
+	.dma_invalidate	=	sbus_esp_dma_invalidate,
+	.send_dma_cmd	=	sbus_esp_send_dma_cmd,
+	.dma_error	=	sbus_esp_dma_error,
+};
+
+static int esp_sbus_probe_one(struct platform_device *op,
+			      struct platform_device *espdma, int hme)
+{
+	const struct scsi_host_template *tpnt = &scsi_esp_template;
+	struct Scsi_Host *host;
+	struct esp *esp;
+	int err;
+
+	host = scsi_host_alloc(tpnt, sizeof(struct esp));
+
+	err = -ENOMEM;
+	if (!host)
+		goto fail;
+
+	host->max_id = (hme ? 16 : 8);
+	esp = shost_priv(host);
+
+	esp->host = host;
+	esp->dev = &op->dev;
+	esp->ops = &sbus_esp_ops;
+
+	if (hme)
+		esp->flags |= ESP_FLAG_WIDE_CAPABLE;
+
+	err = esp_sbus_setup_dma(esp, espdma);
+	if (err < 0)
+		goto fail_unlink;
+
+	err = esp_sbus_map_regs(esp, hme);
+	if (err < 0)
+		goto fail_unlink;
+
+	err = esp_sbus_map_command_block(esp);
+	if (err < 0)
+		goto fail_unmap_regs;
+
+	err = esp_sbus_register_irq(esp);
+	if (err < 0)
+		goto fail_unmap_command_block;
+
+	esp_sbus_get_props(esp, espdma);
+
+	/* Before we try to touch the ESP chip, ESC1 dma can
+	 * come up with the reset bit set, so make sure that
+	 * is clear first.
+	 */
+	if (esp->dmarev == dvmaesc1) {
+		u32 val = dma_read32(DMA_CSR);
+
+		dma_write32(val & ~DMA_RST_SCSI, DMA_CSR);
+	}
+
+	dev_set_drvdata(&op->dev, esp);
+
+	err = scsi_esp_register(esp);
+	if (err)
+		goto fail_free_irq;
+
+	return 0;
+
+fail_free_irq:
+	free_irq(host->irq, esp);
+fail_unmap_command_block:
+	dma_free_coherent(&op->dev, 16,
+			  esp->command_block,
+			  esp->command_block_dma);
+fail_unmap_regs:
+	of_iounmap(&op->resource[(hme ? 1 : 0)], esp->regs, SBUS_ESP_REG_SIZE);
+fail_unlink:
+	scsi_host_put(host);
+fail:
+	return err;
+}
+
+static int esp_sbus_probe(struct platform_device *op)
+{
+	struct device_node *dma_node = NULL;
+	struct device_node *dp = op->dev.of_node;
+	struct platform_device *dma_of = NULL;
+	int hme = 0;
+	int ret;
+
+	if (of_node_name_eq(dp->parent, "espdma") ||
+	    of_node_name_eq(dp->parent, "dma"))
+		dma_node = dp->parent;
+	else if (of_node_name_eq(dp, "SUNW,fas")) {
+		dma_node = op->dev.of_node;
+		hme = 1;
+	}
+	if (dma_node)
+		dma_of = of_find_device_by_node(dma_node);
+	if (!dma_of)
+		return -ENODEV;
+
+	ret = esp_sbus_probe_one(op, dma_of, hme);
+	if (ret)
+		put_device(&dma_of->dev);
+
+	return ret;
+}
+
+static void esp_sbus_remove(struct platform_device *op)
+{
+	struct esp *esp = dev_get_drvdata(&op->dev);
+	struct platform_device *dma_of = esp->dma;
+	unsigned int irq = esp->host->irq;
+	bool is_hme;
+	u32 val;
+
+	scsi_esp_unregister(esp);
+
+	/* Disable interrupts.  */
+	val = dma_read32(DMA_CSR);
+	dma_write32(val & ~DMA_INT_ENAB, DMA_CSR);
+
+	free_irq(irq, esp);
+
+	is_hme = (esp->dmarev == dvmahme);
+
+	dma_free_coherent(&op->dev, 16,
+			  esp->command_block,
+			  esp->command_block_dma);
+	of_iounmap(&op->resource[(is_hme ? 1 : 0)], esp->regs,
+		   SBUS_ESP_REG_SIZE);
+	of_iounmap(&dma_of->resource[0], esp->dma_regs,
+		   resource_size(&dma_of->resource[0]));
+
+	scsi_host_put(esp->host);
+
+	dev_set_drvdata(&op->dev, NULL);
+
+	put_device(&dma_of->dev);
+}
+
+static const struct of_device_id esp_match[] = {
+	{
+		.name = "SUNW,esp",
+	},
+	{
+		.name = "SUNW,fas",
+	},
+	{
+		.name = "esp",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, esp_match);
+
+static struct platform_driver esp_sbus_driver = {
+	.driver = {
+		.name = "esp",
+		.of_match_table = esp_match,
+	},
+	.probe		= esp_sbus_probe,
+	.remove		= esp_sbus_remove,
+};
+module_platform_driver(esp_sbus_driver);
+
+MODULE_DESCRIPTION("Sun ESP SCSI driver");
+MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);