remoteproc: Use size_t type for len in da_to_va

With upcoming changes in elf loader for elf64 support, section size will
be a u64. When used with da_to_va, this will potentially lead to
overflow if using the current "int" type for len argument. Change
da_to_va prototype to use a size_t for len and fix all users of this
function.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Clement Leger <cleger@kalray.eu>
Link: https://lore.kernel.org/r/20200302093902.27849-2-cleger@kalray.eu
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index 3e72b6f..8957ed2 100644 (file)
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -186,7 +186,7 @@ static int imx_rproc_stop(struct rproc *rproc)
 }
 
 static int imx_rproc_da_to_sys(struct imx_rproc *priv, u64 da,
-                              int len, u64 *sys)
+                              size_t len, u64 *sys)
 {
        const struct imx_rproc_dcfg *dcfg = priv->dcfg;
        int i;
@@ -203,19 +203,19 @@ static int imx_rproc_da_to_sys(struct imx_rproc *priv, u64 da,
                }
        }
 
-       dev_warn(priv->dev, "Translation failed: da = 0x%llx len = 0x%x\n",
+       dev_warn(priv->dev, "Translation failed: da = 0x%llx len = 0x%zx\n",
                 da, len);
        return -ENOENT;
 }
 
-static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, int len)
+static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
 {
        struct imx_rproc *priv = rproc->priv;
        void *va = NULL;
        u64 sys;
        int i;
 
-       if (len <= 0)
+       if (len == 0)
                return NULL;
 
        /*
@@ -235,7 +235,8 @@ static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, int len)
                }
        }
 
-       dev_dbg(&rproc->dev, "da = 0x%llx len = 0x%x va = 0x%p\n", da, len, va);
+       dev_dbg(&rproc->dev, "da = 0x%llx len = 0x%zx va = 0x%p\n",
+               da, len, va);
 
        return va;
 }

diff --git a/drivers/remoteproc/keystone_remoteproc.c b/drivers/remoteproc/keystone_remoteproc.c
index 5c4658f..cd26616 100644 (file)
--- a/drivers/remoteproc/keystone_remoteproc.c
+++ b/drivers/remoteproc/keystone_remoteproc.c
@@ -246,7 +246,7 @@ static void keystone_rproc_kick(struct rproc *rproc, int vqid)
  * can be used either by the remoteproc core for loading (when using kernel
  * remoteproc loader), or by any rpmsg bus drivers.
  */
-static void *keystone_rproc_da_to_va(struct rproc *rproc, u64 da, int len)
+static void *keystone_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
 {
        struct keystone_rproc *ksproc = rproc->priv;
        void __iomem *va = NULL;
@@ -255,7 +255,7 @@ static void *keystone_rproc_da_to_va(struct rproc *rproc, u64 da, int len)
        size_t size;
        int i;
 
-       if (len <= 0)
+       if (len == 0)
                return NULL;
 
        for (i = 0; i < ksproc->num_mems; i++) {

diff --git a/drivers/remoteproc/qcom_q6v5_adsp.c b/drivers/remoteproc/qcom_q6v5_adsp.c
index e953886..2b01f22 100644 (file)
--- a/drivers/remoteproc/qcom_q6v5_adsp.c
+++ b/drivers/remoteproc/qcom_q6v5_adsp.c
@@ -270,7 +270,7 @@ static int adsp_stop(struct rproc *rproc)
        return ret;
 }
 
-static void *adsp_da_to_va(struct rproc *rproc, u64 da, int len)
+static void *adsp_da_to_va(struct rproc *rproc, u64 da, size_t len)
 {
        struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
        int offset;

diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index d766741..03ffc6d 100644 (file)
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -1325,7 +1325,7 @@ static int q6v5_stop(struct rproc *rproc)
        return 0;
 }
 
-static void *q6v5_da_to_va(struct rproc *rproc, u64 da, int len)
+static void *q6v5_da_to_va(struct rproc *rproc, u64 da, size_t len)
 {
        struct q6v5 *qproc = rproc->priv;
        int offset;

diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c
index edf9d0e..a41860d 100644 (file)
--- a/drivers/remoteproc/qcom_q6v5_pas.c
+++ b/drivers/remoteproc/qcom_q6v5_pas.c
@@ -222,7 +222,7 @@ static int adsp_stop(struct rproc *rproc)
        return ret;
 }
 
-static void *adsp_da_to_va(struct rproc *rproc, u64 da, int len)
+static void *adsp_da_to_va(struct rproc *rproc, u64 da, size_t len)
 {
        struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
        int offset;

diff --git a/drivers/remoteproc/qcom_q6v5_wcss.c b/drivers/remoteproc/qcom_q6v5_wcss.c
index f93e1e4..f1924b7 100644 (file)
--- a/drivers/remoteproc/qcom_q6v5_wcss.c
+++ b/drivers/remoteproc/qcom_q6v5_wcss.c
@@ -406,7 +406,7 @@ static int q6v5_wcss_stop(struct rproc *rproc)
        return 0;
 }
 
-static void *q6v5_wcss_da_to_va(struct rproc *rproc, u64 da, int len)
+static void *q6v5_wcss_da_to_va(struct rproc *rproc, u64 da, size_t len)
 {
        struct q6v5_wcss *wcss = rproc->priv;
        int offset;

diff --git a/drivers/remoteproc/qcom_wcnss.c b/drivers/remoteproc/qcom_wcnss.c
index dc13575..0c7afd0 100644 (file)
--- a/drivers/remoteproc/qcom_wcnss.c
+++ b/drivers/remoteproc/qcom_wcnss.c
@@ -287,7 +287,7 @@ static int wcnss_stop(struct rproc *rproc)
        return ret;
 }
 
-static void *wcnss_da_to_va(struct rproc *rproc, u64 da, int len)
+static void *wcnss_da_to_va(struct rproc *rproc, u64 da, size_t len)
 {
        struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
        int offset;

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 3f0026c..1f20db1 100644 (file)
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -185,7 +185,7 @@ EXPORT_SYMBOL(rproc_va_to_pa);
  * here the output of the DMA API for the carveouts, which should be more
  * correct.
  */
-void *rproc_da_to_va(struct rproc *rproc, u64 da, int len)
+void *rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
 {
        struct rproc_mem_entry *carveout;
        void *ptr = NULL;

diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h
index 493ef92..5858021 100644 (file)
--- a/drivers/remoteproc/remoteproc_internal.h
+++ b/drivers/remoteproc/remoteproc_internal.h
@@ -50,7 +50,7 @@ void rproc_exit_sysfs(void);
 void rproc_free_vring(struct rproc_vring *rvring);
 int rproc_alloc_vring(struct rproc_vdev *rvdev, int i);
 
-void *rproc_da_to_va(struct rproc *rproc, u64 da, int len);
+void *rproc_da_to_va(struct rproc *rproc, u64 da, size_t len);
 phys_addr_t rproc_va_to_pa(void *cpu_addr);
 int rproc_trigger_recovery(struct rproc *rproc);
 

diff --git a/drivers/remoteproc/st_slim_rproc.c b/drivers/remoteproc/st_slim_rproc.c
index 04492fe..09bcb4d 100644 (file)
--- a/drivers/remoteproc/st_slim_rproc.c
+++ b/drivers/remoteproc/st_slim_rproc.c
@@ -174,7 +174,7 @@ static int slim_rproc_stop(struct rproc *rproc)
        return 0;
 }
 
-static void *slim_rproc_da_to_va(struct rproc *rproc, u64 da, int len)
+static void *slim_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
 {
        struct st_slim_rproc *slim_rproc = rproc->priv;
        void *va = NULL;
@@ -191,7 +191,7 @@ static void *slim_rproc_da_to_va(struct rproc *rproc, u64 da, int len)
                }
        }
 
-       dev_dbg(&rproc->dev, "da = 0x%llx len = 0x%x va = 0x%pK\n",
+       dev_dbg(&rproc->dev, "da = 0x%llx len = 0x%zx va = 0x%pK\n",
                da, len, va);
 
        return va;

diff --git a/drivers/remoteproc/wkup_m3_rproc.c b/drivers/remoteproc/wkup_m3_rproc.c
index 3984e58..b9349d6 100644 (file)
--- a/drivers/remoteproc/wkup_m3_rproc.c
+++ b/drivers/remoteproc/wkup_m3_rproc.c
@@ -80,14 +80,14 @@ static int wkup_m3_rproc_stop(struct rproc *rproc)
        return 0;
 }
 
-static void *wkup_m3_rproc_da_to_va(struct rproc *rproc, u64 da, int len)
+static void *wkup_m3_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
 {
        struct wkup_m3_rproc *wkupm3 = rproc->priv;
        void *va = NULL;
        int i;
        u32 offset;
 
-       if (len <= 0)
+       if (len == 0)
                return NULL;
 
        for (i = 0; i < WKUPM3_MEM_MAX; i++) {

diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 16ad666..8921579 100644 (file)
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -374,7 +374,7 @@ struct rproc_ops {
        int (*start)(struct rproc *rproc);
        int (*stop)(struct rproc *rproc);
        void (*kick)(struct rproc *rproc, int vqid);
-       void * (*da_to_va)(struct rproc *rproc, u64 da, int len);
+       void * (*da_to_va)(struct rproc *rproc, u64 da, size_t len);
        int (*parse_fw)(struct rproc *rproc, const struct firmware *fw);
        int (*handle_rsc)(struct rproc *rproc, u32 rsc_type, void *rsc,
                          int offset, int avail);