drm/radeon/kms/pm: resurrect printing power states

[safe/jmp/linux-2.6] / drivers / firmware / dcdbas.c

diff --git a/drivers/firmware/dcdbas.c b/drivers/firmware/dcdbas.c
index 18cdcb3..aa9bc9e 100644 (file)
--- a/drivers/firmware/dcdbas.c
+++ b/drivers/firmware/dcdbas.c
@@ -23,6 +23,7 @@
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #include <linux/errno.h>
+#include <linux/gfp.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/mc146818rtc.h>
@@ -35,7 +36,6 @@
 #include <linux/types.h>
 #include <linux/mutex.h>
 #include <asm/io.h>
-#include <asm/semaphore.h>
 
 #include "dcdbas.h"
 
@@ -64,7 +64,7 @@ static void smi_data_buf_free(void)
                return;
 
        dev_dbg(&dcdbas_pdev->dev, "%s: phys: %x size: %lu\n",
-               __FUNCTION__, smi_data_buf_phys_addr, smi_data_buf_size);
+               __func__, smi_data_buf_phys_addr, smi_data_buf_size);
 
        dma_free_coherent(&dcdbas_pdev->dev, smi_data_buf_size, smi_data_buf,
                          smi_data_buf_handle);
@@ -93,7 +93,7 @@ static int smi_data_buf_realloc(unsigned long size)
        if (!buf) {
                dev_dbg(&dcdbas_pdev->dev,
                        "%s: failed to allocate memory size %lu\n",
-                       __FUNCTION__, size);
+                       __func__, size);
                return -ENOMEM;
        }
        /* memory zeroed by dma_alloc_coherent */
@@ -111,7 +111,7 @@ static int smi_data_buf_realloc(unsigned long size)
        smi_data_buf_size = size;
 
        dev_dbg(&dcdbas_pdev->dev, "%s: phys: %x size: %lu\n",
-               __FUNCTION__, smi_data_buf_phys_addr, smi_data_buf_size);
+               __func__, smi_data_buf_phys_addr, smi_data_buf_size);
 
        return 0;
 }
@@ -149,29 +149,20 @@ static ssize_t smi_data_buf_size_store(struct device *dev,
        return count;
 }
 
-static ssize_t smi_data_read(struct kobject *kobj,
+static ssize_t smi_data_read(struct file *filp, struct kobject *kobj,
                             struct bin_attribute *bin_attr,
                             char *buf, loff_t pos, size_t count)
 {
-       size_t max_read;
        ssize_t ret;
 
        mutex_lock(&smi_data_lock);
-
-       if (pos >= smi_data_buf_size) {
-               ret = 0;
-               goto out;
-       }
-
-       max_read = smi_data_buf_size - pos;
-       ret = min(max_read, count);
-       memcpy(buf, smi_data_buf + pos, ret);
-out:
+       ret = memory_read_from_buffer(buf, count, &pos, smi_data_buf,
+                                       smi_data_buf_size);
        mutex_unlock(&smi_data_lock);
        return ret;
 }
 
-static ssize_t smi_data_write(struct kobject *kobj,
+static ssize_t smi_data_write(struct file *filp, struct kobject *kobj,
                              struct bin_attribute *bin_attr,
                              char *buf, loff_t pos, size_t count)
 {
@@ -248,27 +239,30 @@ static ssize_t host_control_on_shutdown_store(struct device *dev,
 }
 
 /**
- * smi_request: generate SMI request
+ * dcdbas_smi_request: generate SMI request
  *
  * Called with smi_data_lock.
  */
-static int smi_request(struct smi_cmd *smi_cmd)
+int dcdbas_smi_request(struct smi_cmd *smi_cmd)
 {
-       cpumask_t old_mask;
+       cpumask_var_t old_mask;
        int ret = 0;
 
        if (smi_cmd->magic != SMI_CMD_MAGIC) {
                dev_info(&dcdbas_pdev->dev, "%s: invalid magic value\n",
-                        __FUNCTION__);
+                        __func__);
                return -EBADR;
        }
 
        /* SMI requires CPU 0 */
-       old_mask = current->cpus_allowed;
-       set_cpus_allowed(current, cpumask_of_cpu(0));
+       if (!alloc_cpumask_var(&old_mask, GFP_KERNEL))
+               return -ENOMEM;
+
+       cpumask_copy(old_mask, &current->cpus_allowed);
+       set_cpus_allowed_ptr(current, cpumask_of(0));
        if (smp_processor_id() != 0) {
                dev_dbg(&dcdbas_pdev->dev, "%s: failed to get CPU 0\n",
-                       __FUNCTION__);
+                       __func__);
                ret = -EBUSY;
                goto out;
        }
@@ -285,7 +279,8 @@ static int smi_request(struct smi_cmd *smi_cmd)
        );
 
 out:
-       set_cpus_allowed(current, old_mask);
+       set_cpus_allowed_ptr(current, old_mask);
+       free_cpumask_var(old_mask);
        return ret;
 }
 
@@ -319,14 +314,14 @@ static ssize_t smi_request_store(struct device *dev,
        switch (val) {
        case 2:
                /* Raw SMI */
-               ret = smi_request(smi_cmd);
+               ret = dcdbas_smi_request(smi_cmd);
                if (!ret)
                        ret = count;
                break;
        case 1:
                /* Calling Interface SMI */
                smi_cmd->ebx = (u32) virt_to_phys(smi_cmd->command_buffer);
-               ret = smi_request(smi_cmd);
+               ret = dcdbas_smi_request(smi_cmd);
                if (!ret)
                        ret = count;
                break;
@@ -343,6 +338,7 @@ out:
        mutex_unlock(&smi_data_lock);
        return ret;
 }
+EXPORT_SYMBOL(dcdbas_smi_request);
 
 /**
  * host_control_smi: generate host control SMI
@@ -429,7 +425,7 @@ static int host_control_smi(void)
 
        default:
                dev_dbg(&dcdbas_pdev->dev, "%s: invalid SMI type %u\n",
-                       __FUNCTION__, host_control_smi_type);
+                       __func__, host_control_smi_type);
                return -ENOSYS;
        }
 
@@ -457,13 +453,13 @@ static void dcdbas_host_control(void)
        host_control_action = HC_ACTION_NONE;
 
        if (!smi_data_buf) {
-               dev_dbg(&dcdbas_pdev->dev, "%s: no SMI buffer\n", __FUNCTION__);
+               dev_dbg(&dcdbas_pdev->dev, "%s: no SMI buffer\n", __func__);
                return;
        }
 
        if (smi_data_buf_size < sizeof(struct apm_cmd)) {
                dev_dbg(&dcdbas_pdev->dev, "%s: SMI buffer too small\n",
-                       __FUNCTION__);
+                       __func__);
                return;
        }
 
@@ -550,7 +546,7 @@ static int __devinit dcdbas_probe(struct platform_device *dev)
         * BIOS SMI calls require buffer addresses be in 32-bit address space.
         * This is done by setting the DMA mask below.
         */
-       dcdbas_pdev->dev.coherent_dma_mask = DMA_32BIT_MASK;
+       dcdbas_pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
        dcdbas_pdev->dev.dma_mask = &dcdbas_pdev->dev.coherent_dma_mask;
 
        error = sysfs_create_group(&dev->dev.kobj, &dcdbas_attr_group);
@@ -658,4 +654,5 @@ MODULE_DESCRIPTION(DRIVER_DESCRIPTION " (version " DRIVER_VERSION ")");
 MODULE_VERSION(DRIVER_VERSION);
 MODULE_AUTHOR("Dell Inc.");
 MODULE_LICENSE("GPL");
-
+/* Any System or BIOS claiming to be by Dell */
+MODULE_ALIAS("dmi:*:[bs]vnD[Ee][Ll][Ll]*:*");