Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:

 - self-test failure of crc32c on powerpc

 - regressions of ecb(aes) when used with xts/lrw in s5p-sss

 - a number of bugs in the omap RNG driver

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: s5p-sss - Fix spinlock recursion on LRW(AES)
  hwrng: omap - Do not access INTMASK_REG on EIP76
  hwrng: omap - use devm_clk_get() instead of of_clk_get()
  hwrng: omap - write registers after enabling the clock
  crypto: s5p-sss - Fix completing crypto request in IRQ handler
  crypto: powerpc - Fix initialisation of crc32c context

3 files changed, 100 insertions, 50 deletions

diff --git a/arch/powerpc/crypto/crc32c-vpmsum_glue.c b/arch/powerpc/crypto/crc32c-vpmsum_glue.c
index 9fa046d56eba..411994551afc 100644
--- a/arch/powerpc/crypto/crc32c-vpmsum_glue.c
+++ b/arch/powerpc/crypto/crc32c-vpmsum_glue.c
@@ -52,7 +52,7 @@ static int crc32c_vpmsum_cra_init(struct crypto_tfm *tfm)
 {
         u32 *key = crypto_tfm_ctx(tfm);
 
-        *key = 0;
+        *key = ~0;
 
         return 0;
 }
diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index 3ad86fdf954e..b1ad12552b56 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -397,9 +397,8 @@ static int of_get_omap_rng_device_details(struct omap_rng_dev *priv,
                                 irq, err);
                         return err;
                 }
-                omap_rng_write(priv, RNG_INTMASK_REG, RNG_SHUTDOWN_OFLO_MASK);
 
-                priv->clk = of_clk_get(pdev->dev.of_node, 0);
+                priv->clk = devm_clk_get(&pdev->dev, NULL);
                 if (IS_ERR(priv->clk) && PTR_ERR(priv->clk) == -EPROBE_DEFER)
                         return -EPROBE_DEFER;
                 if (!IS_ERR(priv->clk)) {
@@ -408,6 +407,19 @@ static int of_get_omap_rng_device_details(struct omap_rng_dev *priv,
                                 dev_err(&pdev->dev, "unable to enable the clk, "
                                                     "err = %d\n", err);
                 }
+
+                /*
+                 * On OMAP4, enabling the shutdown_oflo interrupt is
+                 * done in the interrupt mask register. There is no
+                 * such register on EIP76, and it's enabled by the
+                 * same bit in the control register
+                 */
+                if (priv->pdata->regs[RNG_INTMASK_REG])
+                        omap_rng_write(priv, RNG_INTMASK_REG,
+                                       RNG_SHUTDOWN_OFLO_MASK);
+                else
+                        omap_rng_write(priv, RNG_CONTROL_REG,
+                                       RNG_SHUTDOWN_OFLO_MASK);
         }
         return 0;
 }
diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c
index dce1af0ce85c..1b9da3dc799b 100644
--- a/drivers/crypto/s5p-sss.c
+++ b/drivers/crypto/s5p-sss.c
@@ -270,7 +270,7 @@ static void s5p_sg_copy_buf(void *buf, struct scatterlist *sg,
         scatterwalk_done(&walk, out, 0);
 }
 
-static void s5p_aes_complete(struct s5p_aes_dev *dev, int err)
+static void s5p_sg_done(struct s5p_aes_dev *dev)
 {
         if (dev->sg_dst_cpy) {
                 dev_dbg(dev->dev,
@@ -281,8 +281,11 @@ static void s5p_aes_complete(struct s5p_aes_dev *dev, int err)
         }
         s5p_free_sg_cpy(dev, &dev->sg_src_cpy);
         s5p_free_sg_cpy(dev, &dev->sg_dst_cpy);
+}
 
-        /* holding a lock outside */
+/* Calls the completion. Cannot be called with dev->lock hold. */
+static void s5p_aes_complete(struct s5p_aes_dev *dev, int err)
+{
         dev->req->base.complete(&dev->req->base, err);
         dev->busy = false;
 }
@@ -368,51 +371,44 @@ exit:
 }
 
 /*
- * Returns true if new transmitting (output) data is ready and its
- * address+length have to be written to device (by calling
- * s5p_set_dma_outdata()). False otherwise.
+ * Returns -ERRNO on error (mapping of new data failed).
+ * On success returns:
+ *  - 0 if there is no more data,
+ *  - 1 if new transmitting (output) data is ready and its address+length
+ *     have to be written to device (by calling s5p_set_dma_outdata()).
  */
-static bool s5p_aes_tx(struct s5p_aes_dev *dev)
+static int s5p_aes_tx(struct s5p_aes_dev *dev)
 {
-        int err = 0;
-        bool ret = false;
+        int ret = 0;
 
         s5p_unset_outdata(dev);
 
         if (!sg_is_last(dev->sg_dst)) {
-                err = s5p_set_outdata(dev, sg_next(dev->sg_dst));
-                if (err)
-                        s5p_aes_complete(dev, err);
-                else
-                        ret = true;
-        } else {
-                s5p_aes_complete(dev, err);
-
-                dev->busy = true;
-                tasklet_schedule(&dev->tasklet);
+                ret = s5p_set_outdata(dev, sg_next(dev->sg_dst));
+                if (!ret)
+                        ret = 1;
         }
 
         return ret;
 }
 
 /*
- * Returns true if new receiving (input) data is ready and its
- * address+length have to be written to device (by calling
- * s5p_set_dma_indata()). False otherwise.
+ * Returns -ERRNO on error (mapping of new data failed).
+ * On success returns:
+ *  - 0 if there is no more data,
+ *  - 1 if new receiving (input) data is ready and its address+length
+ *     have to be written to device (by calling s5p_set_dma_indata()).
  */
-static bool s5p_aes_rx(struct s5p_aes_dev *dev)
+static int s5p_aes_rx(struct s5p_aes_dev *dev/*, bool *set_dma*/)
 {
-        int err;
-        bool ret = false;
+        int ret = 0;
 
         s5p_unset_indata(dev);
 
         if (!sg_is_last(dev->sg_src)) {
-                err = s5p_set_indata(dev, sg_next(dev->sg_src));
-                if (err)
-                        s5p_aes_complete(dev, err);
-                else
-                        ret = true;
+                ret = s5p_set_indata(dev, sg_next(dev->sg_src));
+                if (!ret)
+                        ret = 1;
         }
 
         return ret;
@@ -422,33 +418,73 @@ static irqreturn_t s5p_aes_interrupt(int irq, void *dev_id)
 {
         struct platform_device *pdev = dev_id;
         struct s5p_aes_dev *dev = platform_get_drvdata(pdev);
-        bool set_dma_tx = false;
-        bool set_dma_rx = false;
+        int err_dma_tx = 0;
+        int err_dma_rx = 0;
+        bool tx_end = false;
         unsigned long flags;
         uint32_t status;
+        int err;
 
         spin_lock_irqsave(&dev->lock, flags);
 
+        /*
+         * Handle rx or tx interrupt. If there is still data (scatterlist did not
+         * reach end), then map next scatterlist entry.
+         * In case of such mapping error, s5p_aes_complete() should be called.
+         *
+         * If there is no more data in tx scatter list, call s5p_aes_complete()
+         * and schedule new tasklet.
+         */
         status = SSS_READ(dev, FCINTSTAT);
         if (status & SSS_FCINTSTAT_BRDMAINT)
-                set_dma_rx = s5p_aes_rx(dev);
-        if (status & SSS_FCINTSTAT_BTDMAINT)
-                set_dma_tx = s5p_aes_tx(dev);
+                err_dma_rx = s5p_aes_rx(dev);
+
+        if (status & SSS_FCINTSTAT_BTDMAINT) {
+                if (sg_is_last(dev->sg_dst))
+                        tx_end = true;
+                err_dma_tx = s5p_aes_tx(dev);
+        }
 
         SSS_WRITE(dev, FCINTPEND, status);
 
-        /*
-         * Writing length of DMA block (either receiving or transmitting)
-         * will start the operation immediately, so this should be done
-         * at the end (even after clearing pending interrupts to not miss the
-         * interrupt).
-         */
-        if (set_dma_tx)
-                s5p_set_dma_outdata(dev, dev->sg_dst);
-        if (set_dma_rx)
-                s5p_set_dma_indata(dev, dev->sg_src);
+        if (err_dma_rx < 0) {
+                err = err_dma_rx;
+                goto error;
+        }
+        if (err_dma_tx < 0) {
+                err = err_dma_tx;
+                goto error;
+        }
+
+        if (tx_end) {
+                s5p_sg_done(dev);
+
+                spin_unlock_irqrestore(&dev->lock, flags);
+
+                s5p_aes_complete(dev, 0);
+                dev->busy = true;
+                tasklet_schedule(&dev->tasklet);
+        } else {
+                /*
+                 * Writing length of DMA block (either receiving or
+                 * transmitting) will start the operation immediately, so this
+                 * should be done at the end (even after clearing pending
+                 * interrupts to not miss the interrupt).
+                 */
+                if (err_dma_tx == 1)
+                        s5p_set_dma_outdata(dev, dev->sg_dst);
+                if (err_dma_rx == 1)
+                        s5p_set_dma_indata(dev, dev->sg_src);
 
+                spin_unlock_irqrestore(&dev->lock, flags);
+        }
+
+        return IRQ_HANDLED;
+
+error:
+        s5p_sg_done(dev);
         spin_unlock_irqrestore(&dev->lock, flags);
+        s5p_aes_complete(dev, err);
 
         return IRQ_HANDLED;
 }
@@ -597,8 +633,9 @@ outdata_error:
         s5p_unset_indata(dev);
 
 indata_error:
-        s5p_aes_complete(dev, err);
+        s5p_sg_done(dev);
         spin_unlock_irqrestore(&dev->lock, flags);
+        s5p_aes_complete(dev, err);
 }
 
 static void s5p_tasklet_cb(unsigned long data)
@@ -805,8 +842,9 @@ static int s5p_aes_probe(struct platform_device *pdev)
                 dev_warn(dev, "feed control interrupt is not available.\n");
                 goto err_irq;
         }
-        err = devm_request_irq(dev, pdata->irq_fc, s5p_aes_interrupt,
-                               IRQF_SHARED, pdev->name, pdev);
+        err = devm_request_threaded_irq(dev, pdata->irq_fc, NULL,
+                                        s5p_aes_interrupt, IRQF_ONESHOT,
+                                        pdev->name, pdev);
         if (err < 0) {
                 dev_warn(dev, "feed control interrupt is not available.\n");
                 goto err_irq;