[PATCH v3 0/2] i3c: dw: Fix memory leak in dw_i3c_master_i3c_xfers()

[PATCH v3 0/2] i3c: dw: Fix memory leak in dw_i3c_master_i3c_xfers()

[Felix Gu]

Signed-off-by: Felix Gu <ustc.gu@gmail.com>
---
Changes in v3:
- Refine the commit message.
- Simplify the xfer cleanup using __free(kfree).
- Link to v2: https://lore.kernel.org/r/20260402-dw-i3c-2-v2-1-aa6c81d392da@gmail.com

Changes in v2:
- Switch to use __free(kfree) to automatically free the memory.
- Link to v1: https://lore.kernel.org/r/20260402-dw-i3c-2-v1-1-b530970654ec@gmail.com

---
Felix Gu (2):
      i3c: dw: Fix memory leak in dw_i3c_master_i3c_xfers()
      i3c: dw: Simplify xfer cleanup with __free(kfree)

 drivers/i3c/master/dw-i3c-master.c | 38 +++++++++-----------------------------
 1 file changed, 9 insertions(+), 29 deletions(-)
---
base-commit: bd0f139e5fc11182777b81cefc3893ea508544ec
change-id: 20260402-dw-i3c-2-8f123def99b2

Best regards,
-- 
Felix Gu <ustc.gu@gmail.com>

[PATCH v3 1/2] i3c: dw: Fix memory leak in dw_i3c_master_i3c_xfers()

[Felix Gu]

The dw_i3c_master_i3c_xfers() function allocates memory for the xfer
structure using dw_i3c_master_alloc_xfer(). If pm_runtime_resume_and_get()
fails, the function returns without freeing the allocated xfer, resulting
in a memory leak.

Since dw_i3c_master_free_xfer() is a thin wrapper around kfree(), use
the __free(kfree) cleanup attribute to handle the free automatically on
all exit paths.

Fixes: 62fe9d06f570 ("i3c: dw: Add power management support")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
---
 drivers/i3c/master/dw-i3c-master.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
index d6bdb32397fb..2e31228b3809 100644
--- a/drivers/i3c/master/dw-i3c-master.c
+++ b/drivers/i3c/master/dw-i3c-master.c
@@ -7,6 +7,7 @@
 
 #include <linux/bitfield.h>
 #include <linux/bitops.h>
+#include <linux/cleanup.h>
 #include <linux/clk.h>
 #include <linux/completion.h>
 #include <linux/err.h>
@@ -924,7 +925,6 @@ static int dw_i3c_master_i3c_xfers(struct i3c_dev_desc *dev,
 	struct i3c_master_controller *m = i3c_dev_get_master(dev);
 	struct dw_i3c_master *master = to_dw_i3c_master(m);
 	unsigned int nrxwords = 0, ntxwords = 0;
-	struct dw_i3c_xfer *xfer;
 	int i, ret = 0;
 
 	if (!i3c_nxfers)
@@ -944,7 +944,7 @@ static int dw_i3c_master_i3c_xfers(struct i3c_dev_desc *dev,
 	    nrxwords > master->caps.datafifodepth)
 		return -EOPNOTSUPP;
 
-	xfer = dw_i3c_master_alloc_xfer(master, i3c_nxfers);
+	struct dw_i3c_xfer *xfer __free(kfree) = dw_i3c_master_alloc_xfer(master, i3c_nxfers);
 	if (!xfer)
 		return -ENOMEM;
 
@@ -995,7 +995,6 @@ static int dw_i3c_master_i3c_xfers(struct i3c_dev_desc *dev,
 	}
 
 	ret = xfer->ret;
-	dw_i3c_master_free_xfer(xfer);
 
 	pm_runtime_put_autosuspend(master->dev);
 	return ret;

-- 
2.43.0

Re: [PATCH v3 1/2] i3c: dw: Fix memory leak in dw_i3c_master_i3c_xfers()

[Frank Li]

On Sat, Apr 04, 2026 at 06:32:30PM +0800, Felix Gu wrote:
> The dw_i3c_master_i3c_xfers() function allocates memory for the xfer
> structure using dw_i3c_master_alloc_xfer(). If pm_runtime_resume_and_get()
> fails, the function returns without freeing the allocated xfer, resulting
> in a memory leak.
>
> Since dw_i3c_master_free_xfer() is a thin wrapper around kfree(), use
> the __free(kfree) cleanup attribute to handle the free automatically on
> all exit paths.
>
> Fixes: 62fe9d06f570 ("i3c: dw: Add power management support")
> Signed-off-by: Felix Gu <ustc.gu@gmail.com>
> ---
Reviewed-by: Frank Li <Frank.Li@nxp.com>

>  drivers/i3c/master/dw-i3c-master.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
> index d6bdb32397fb..2e31228b3809 100644
> --- a/drivers/i3c/master/dw-i3c-master.c
> +++ b/drivers/i3c/master/dw-i3c-master.c
> @@ -7,6 +7,7 @@
>
>  #include <linux/bitfield.h>
>  #include <linux/bitops.h>
> +#include <linux/cleanup.h>
>  #include <linux/clk.h>
>  #include <linux/completion.h>
>  #include <linux/err.h>
> @@ -924,7 +925,6 @@ static int dw_i3c_master_i3c_xfers(struct i3c_dev_desc *dev,
>  	struct i3c_master_controller *m = i3c_dev_get_master(dev);
>  	struct dw_i3c_master *master = to_dw_i3c_master(m);
>  	unsigned int nrxwords = 0, ntxwords = 0;
> -	struct dw_i3c_xfer *xfer;
>  	int i, ret = 0;
>
>  	if (!i3c_nxfers)
> @@ -944,7 +944,7 @@ static int dw_i3c_master_i3c_xfers(struct i3c_dev_desc *dev,
>  	    nrxwords > master->caps.datafifodepth)
>  		return -EOPNOTSUPP;
>
> -	xfer = dw_i3c_master_alloc_xfer(master, i3c_nxfers);
> +	struct dw_i3c_xfer *xfer __free(kfree) = dw_i3c_master_alloc_xfer(master, i3c_nxfers);
>  	if (!xfer)
>  		return -ENOMEM;
>
> @@ -995,7 +995,6 @@ static int dw_i3c_master_i3c_xfers(struct i3c_dev_desc *dev,
>  	}
>
>  	ret = xfer->ret;
> -	dw_i3c_master_free_xfer(xfer);
>
>  	pm_runtime_put_autosuspend(master->dev);
>  	return ret;
>
> --
> 2.43.0
>

Re: [PATCH v3 1/2] i3c: dw: Fix memory leak in dw_i3c_master_i3c_xfers()

[Frank Li]

On Sat, Apr 04, 2026 at 06:32:30PM +0800, Felix Gu wrote:
> The dw_i3c_master_i3c_xfers() function allocates memory for the xfer
> structure using dw_i3c_master_alloc_xfer(). If pm_runtime_resume_and_get()
> fails, the function returns without freeing the allocated xfer, resulting
> in a memory leak.
>
> Since dw_i3c_master_free_xfer() is a thin wrapper around kfree(), use
> the __free(kfree) cleanup attribute to handle the free automatically on
> all exit paths.
>
> Fixes: 62fe9d06f570 ("i3c: dw: Add power management support")
> Signed-off-by: Felix Gu <ustc.gu@gmail.com>
> ---

You misssed Tommaso Merciai review tags in v2

Frank
>  drivers/i3c/master/dw-i3c-master.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
> index d6bdb32397fb..2e31228b3809 100644
> --- a/drivers/i3c/master/dw-i3c-master.c
> +++ b/drivers/i3c/master/dw-i3c-master.c
> @@ -7,6 +7,7 @@
>
>  #include <linux/bitfield.h>
>  #include <linux/bitops.h>
> +#include <linux/cleanup.h>
>  #include <linux/clk.h>
>  #include <linux/completion.h>
>  #include <linux/err.h>
> @@ -924,7 +925,6 @@ static int dw_i3c_master_i3c_xfers(struct i3c_dev_desc *dev,
>  	struct i3c_master_controller *m = i3c_dev_get_master(dev);
>  	struct dw_i3c_master *master = to_dw_i3c_master(m);
>  	unsigned int nrxwords = 0, ntxwords = 0;
> -	struct dw_i3c_xfer *xfer;
>  	int i, ret = 0;
>
>  	if (!i3c_nxfers)
> @@ -944,7 +944,7 @@ static int dw_i3c_master_i3c_xfers(struct i3c_dev_desc *dev,
>  	    nrxwords > master->caps.datafifodepth)
>  		return -EOPNOTSUPP;
>
> -	xfer = dw_i3c_master_alloc_xfer(master, i3c_nxfers);
> +	struct dw_i3c_xfer *xfer __free(kfree) = dw_i3c_master_alloc_xfer(master, i3c_nxfers);
>  	if (!xfer)
>  		return -ENOMEM;
>
> @@ -995,7 +995,6 @@ static int dw_i3c_master_i3c_xfers(struct i3c_dev_desc *dev,
>  	}
>
>  	ret = xfer->ret;
> -	dw_i3c_master_free_xfer(xfer);
>
>  	pm_runtime_put_autosuspend(master->dev);
>  	return ret;
>
> --
> 2.43.0
>

Re: [PATCH v3 1/2] i3c: dw: Fix memory leak in dw_i3c_master_i3c_xfers()

[Felix Gu]

On Mon, Apr 6, 2026 at 11:05 AM Frank Li <Frank.li@nxp.com> wrote:
>
>
> You misssed Tommaso Merciai review tags in v2
>
> Frank
Hi Frank,
You mixed up the review, Tommaso Merciai review tags is for another review.
https://lore.kernel.org/lkml/ac922Ua3UjbZXdPV@tom-desktop/

Best Regards,
Felix Gu

[PATCH v3 2/2] i3c: dw: Simplify xfer cleanup with __free(kfree)

[Felix Gu]

Convert dw-i3c-master to use __free(kfree) guards for struct dw_i3c_xfer
allocations. This frees xfer objects automatically on scope exit, and
removes the now-unused dw_i3c_master_free_xfer() helper.

Signed-off-by: Felix Gu <ustc.gu@gmail.com>
---
 drivers/i3c/master/dw-i3c-master.c | 33 +++++++--------------------------
 1 file changed, 7 insertions(+), 26 deletions(-)

diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
index 2e31228b3809..41ef37115f8b 100644
--- a/drivers/i3c/master/dw-i3c-master.c
+++ b/drivers/i3c/master/dw-i3c-master.c
@@ -394,11 +394,6 @@ dw_i3c_master_alloc_xfer(struct dw_i3c_master *master, unsigned int ncmds)
 	return xfer;
 }
 
-static void dw_i3c_master_free_xfer(struct dw_i3c_xfer *xfer)
-{
-	kfree(xfer);
-}
-
 static void dw_i3c_master_start_xfer_locked(struct dw_i3c_master *master)
 {
 	struct dw_i3c_xfer *xfer = master->xferqueue.cur;
@@ -716,7 +711,6 @@ static void dw_i3c_master_bus_cleanup(struct i3c_master_controller *m)
 static int dw_i3c_ccc_set(struct dw_i3c_master *master,
 			  struct i3c_ccc_cmd *ccc)
 {
-	struct dw_i3c_xfer *xfer;
 	struct dw_i3c_cmd *cmd;
 	int ret, pos = 0;
 
@@ -726,7 +720,7 @@ static int dw_i3c_ccc_set(struct dw_i3c_master *master,
 			return pos;
 	}
 
-	xfer = dw_i3c_master_alloc_xfer(master, 1);
+	struct dw_i3c_xfer *xfer __free(kfree) = dw_i3c_master_alloc_xfer(master, 1);
 	if (!xfer)
 		return -ENOMEM;
 
@@ -751,14 +745,11 @@ static int dw_i3c_ccc_set(struct dw_i3c_master *master,
 	if (xfer->cmds[0].error == RESPONSE_ERROR_IBA_NACK)
 		ccc->err = I3C_ERROR_M2;
 
-	dw_i3c_master_free_xfer(xfer);
-
 	return ret;
 }
 
 static int dw_i3c_ccc_get(struct dw_i3c_master *master, struct i3c_ccc_cmd *ccc)
 {
-	struct dw_i3c_xfer *xfer;
 	struct dw_i3c_cmd *cmd;
 	int ret, pos;
 
@@ -766,7 +757,7 @@ static int dw_i3c_ccc_get(struct dw_i3c_master *master, struct i3c_ccc_cmd *ccc)
 	if (pos < 0)
 		return pos;
 
-	xfer = dw_i3c_master_alloc_xfer(master, 1);
+	struct dw_i3c_xfer *xfer __free(kfree) = dw_i3c_master_alloc_xfer(master, 1);
 	if (!xfer)
 		return -ENOMEM;
 
@@ -791,7 +782,6 @@ static int dw_i3c_ccc_get(struct dw_i3c_master *master, struct i3c_ccc_cmd *ccc)
 	ret = xfer->ret;
 	if (xfer->cmds[0].error == RESPONSE_ERROR_IBA_NACK)
 		ccc->err = I3C_ERROR_M2;
-	dw_i3c_master_free_xfer(xfer);
 
 	return ret;
 }
@@ -838,12 +828,15 @@ static int dw_i3c_master_send_ccc_cmd(struct i3c_master_controller *m,
 static int dw_i3c_master_daa(struct i3c_master_controller *m)
 {
 	struct dw_i3c_master *master = to_dw_i3c_master(m);
-	struct dw_i3c_xfer *xfer;
 	struct dw_i3c_cmd *cmd;
 	u32 olddevs, newdevs;
 	u8 last_addr = 0;
 	int ret, pos;
 
+	struct dw_i3c_xfer *xfer __free(kfree) = dw_i3c_master_alloc_xfer(master, 1);
+	if (!xfer)
+		return -ENOMEM;
+
 	ret = pm_runtime_resume_and_get(master->dev);
 	if (ret < 0) {
 		dev_err(master->dev,
@@ -877,15 +870,8 @@ static int dw_i3c_master_daa(struct i3c_master_controller *m)
 		ret = 0;
 	}
 
-	xfer = dw_i3c_master_alloc_xfer(master, 1);
-	if (!xfer) {
-		ret = -ENOMEM;
-		goto rpm_out;
-	}
-
 	pos = dw_i3c_master_get_free_pos(master);
 	if (pos < 0) {
-		dw_i3c_master_free_xfer(xfer);
 		ret = pos;
 		goto rpm_out;
 	}
@@ -910,8 +896,6 @@ static int dw_i3c_master_daa(struct i3c_master_controller *m)
 			i3c_master_add_i3c_dev_locked(m, master->devs[pos].addr);
 	}
 
-	dw_i3c_master_free_xfer(xfer);
-
 rpm_out:
 	pm_runtime_put_autosuspend(master->dev);
 	return ret;
@@ -1083,7 +1067,6 @@ static int dw_i3c_master_i2c_xfers(struct i2c_dev_desc *dev,
 	struct i3c_master_controller *m = i2c_dev_get_master(dev);
 	struct dw_i3c_master *master = to_dw_i3c_master(m);
 	unsigned int nrxwords = 0, ntxwords = 0;
-	struct dw_i3c_xfer *xfer;
 	int i, ret = 0;
 
 	if (!i2c_nxfers)
@@ -1103,7 +1086,7 @@ static int dw_i3c_master_i2c_xfers(struct i2c_dev_desc *dev,
 	    nrxwords > master->caps.datafifodepth)
 		return -EOPNOTSUPP;
 
-	xfer = dw_i3c_master_alloc_xfer(master, i2c_nxfers);
+	struct dw_i3c_xfer *xfer __free(kfree) = dw_i3c_master_alloc_xfer(master, i2c_nxfers);
 	if (!xfer)
 		return -ENOMEM;
 
@@ -1112,7 +1095,6 @@ static int dw_i3c_master_i2c_xfers(struct i2c_dev_desc *dev,
 		dev_err(master->dev,
 			"<%s> cannot resume i3c bus master, err: %d\n",
 			__func__, ret);
-		dw_i3c_master_free_xfer(xfer);
 		return ret;
 	}
 
@@ -1144,7 +1126,6 @@ static int dw_i3c_master_i2c_xfers(struct i2c_dev_desc *dev,
 		dw_i3c_master_dequeue_xfer(master, xfer);
 
 	ret = xfer->ret;
-	dw_i3c_master_free_xfer(xfer);
 
 	pm_runtime_put_autosuspend(master->dev);
 	return ret;

-- 
2.43.0

Re: [PATCH v3 2/2] i3c: dw: Simplify xfer cleanup with __free(kfree)

[Frank Li]

On Sat, Apr 04, 2026 at 06:32:31PM +0800, Felix Gu wrote:
> Convert dw-i3c-master to use __free(kfree) guards for struct dw_i3c_xfer
> allocations. This frees xfer objects automatically on scope exit, and
> removes the now-unused dw_i3c_master_free_xfer() helper.
>
> Signed-off-by: Felix Gu <ustc.gu@gmail.com>

Reviewed-by: Frank Li <Frank.Li@nxp.com>
> ---
>  drivers/i3c/master/dw-i3c-master.c | 33 +++++++--------------------------
>  1 file changed, 7 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
> index 2e31228b3809..41ef37115f8b 100644
> --- a/drivers/i3c/master/dw-i3c-master.c
> +++ b/drivers/i3c/master/dw-i3c-master.c
> @@ -394,11 +394,6 @@ dw_i3c_master_alloc_xfer(struct dw_i3c_master *master, unsigned int ncmds)
>  	return xfer;
>  }
>
> -static void dw_i3c_master_free_xfer(struct dw_i3c_xfer *xfer)
> -{
> -	kfree(xfer);
> -}
> -
>  static void dw_i3c_master_start_xfer_locked(struct dw_i3c_master *master)
>  {
>  	struct dw_i3c_xfer *xfer = master->xferqueue.cur;
> @@ -716,7 +711,6 @@ static void dw_i3c_master_bus_cleanup(struct i3c_master_controller *m)
>  static int dw_i3c_ccc_set(struct dw_i3c_master *master,
>  			  struct i3c_ccc_cmd *ccc)
>  {
> -	struct dw_i3c_xfer *xfer;
>  	struct dw_i3c_cmd *cmd;
>  	int ret, pos = 0;
>
> @@ -726,7 +720,7 @@ static int dw_i3c_ccc_set(struct dw_i3c_master *master,
>  			return pos;
>  	}
>
> -	xfer = dw_i3c_master_alloc_xfer(master, 1);
> +	struct dw_i3c_xfer *xfer __free(kfree) = dw_i3c_master_alloc_xfer(master, 1);
>  	if (!xfer)
>  		return -ENOMEM;
>
> @@ -751,14 +745,11 @@ static int dw_i3c_ccc_set(struct dw_i3c_master *master,
>  	if (xfer->cmds[0].error == RESPONSE_ERROR_IBA_NACK)
>  		ccc->err = I3C_ERROR_M2;
>
> -	dw_i3c_master_free_xfer(xfer);
> -
>  	return ret;
>  }
>
>  static int dw_i3c_ccc_get(struct dw_i3c_master *master, struct i3c_ccc_cmd *ccc)
>  {
> -	struct dw_i3c_xfer *xfer;
>  	struct dw_i3c_cmd *cmd;
>  	int ret, pos;
>
> @@ -766,7 +757,7 @@ static int dw_i3c_ccc_get(struct dw_i3c_master *master, struct i3c_ccc_cmd *ccc)
>  	if (pos < 0)
>  		return pos;
>
> -	xfer = dw_i3c_master_alloc_xfer(master, 1);
> +	struct dw_i3c_xfer *xfer __free(kfree) = dw_i3c_master_alloc_xfer(master, 1);
>  	if (!xfer)
>  		return -ENOMEM;
>
> @@ -791,7 +782,6 @@ static int dw_i3c_ccc_get(struct dw_i3c_master *master, struct i3c_ccc_cmd *ccc)
>  	ret = xfer->ret;
>  	if (xfer->cmds[0].error == RESPONSE_ERROR_IBA_NACK)
>  		ccc->err = I3C_ERROR_M2;
> -	dw_i3c_master_free_xfer(xfer);
>
>  	return ret;
>  }
> @@ -838,12 +828,15 @@ static int dw_i3c_master_send_ccc_cmd(struct i3c_master_controller *m,
>  static int dw_i3c_master_daa(struct i3c_master_controller *m)
>  {
>  	struct dw_i3c_master *master = to_dw_i3c_master(m);
> -	struct dw_i3c_xfer *xfer;
>  	struct dw_i3c_cmd *cmd;
>  	u32 olddevs, newdevs;
>  	u8 last_addr = 0;
>  	int ret, pos;
>
> +	struct dw_i3c_xfer *xfer __free(kfree) = dw_i3c_master_alloc_xfer(master, 1);
> +	if (!xfer)
> +		return -ENOMEM;
> +
>  	ret = pm_runtime_resume_and_get(master->dev);
>  	if (ret < 0) {
>  		dev_err(master->dev,
> @@ -877,15 +870,8 @@ static int dw_i3c_master_daa(struct i3c_master_controller *m)
>  		ret = 0;
>  	}
>
> -	xfer = dw_i3c_master_alloc_xfer(master, 1);
> -	if (!xfer) {
> -		ret = -ENOMEM;
> -		goto rpm_out;
> -	}
> -
>  	pos = dw_i3c_master_get_free_pos(master);
>  	if (pos < 0) {
> -		dw_i3c_master_free_xfer(xfer);
>  		ret = pos;
>  		goto rpm_out;
>  	}
> @@ -910,8 +896,6 @@ static int dw_i3c_master_daa(struct i3c_master_controller *m)
>  			i3c_master_add_i3c_dev_locked(m, master->devs[pos].addr);
>  	}
>
> -	dw_i3c_master_free_xfer(xfer);
> -
>  rpm_out:
>  	pm_runtime_put_autosuspend(master->dev);
>  	return ret;
> @@ -1083,7 +1067,6 @@ static int dw_i3c_master_i2c_xfers(struct i2c_dev_desc *dev,
>  	struct i3c_master_controller *m = i2c_dev_get_master(dev);
>  	struct dw_i3c_master *master = to_dw_i3c_master(m);
>  	unsigned int nrxwords = 0, ntxwords = 0;
> -	struct dw_i3c_xfer *xfer;
>  	int i, ret = 0;
>
>  	if (!i2c_nxfers)
> @@ -1103,7 +1086,7 @@ static int dw_i3c_master_i2c_xfers(struct i2c_dev_desc *dev,
>  	    nrxwords > master->caps.datafifodepth)
>  		return -EOPNOTSUPP;
>
> -	xfer = dw_i3c_master_alloc_xfer(master, i2c_nxfers);
> +	struct dw_i3c_xfer *xfer __free(kfree) = dw_i3c_master_alloc_xfer(master, i2c_nxfers);
>  	if (!xfer)
>  		return -ENOMEM;
>
> @@ -1112,7 +1095,6 @@ static int dw_i3c_master_i2c_xfers(struct i2c_dev_desc *dev,
>  		dev_err(master->dev,
>  			"<%s> cannot resume i3c bus master, err: %d\n",
>  			__func__, ret);
> -		dw_i3c_master_free_xfer(xfer);
>  		return ret;
>  	}
>
> @@ -1144,7 +1126,6 @@ static int dw_i3c_master_i2c_xfers(struct i2c_dev_desc *dev,
>  		dw_i3c_master_dequeue_xfer(master, xfer);
>
>  	ret = xfer->ret;
> -	dw_i3c_master_free_xfer(xfer);
>
>  	pm_runtime_put_autosuspend(master->dev);
>  	return ret;
>
> --
> 2.43.0
>

Re: [PATCH v3 0/2] i3c: dw: Fix memory leak in dw_i3c_master_i3c_xfers()

[Alexandre Belloni]

On Sat, 04 Apr 2026 18:32:29 +0800, Felix Gu wrote:
> 


Applied, thanks!

[1/2] i3c: dw: Fix memory leak in dw_i3c_master_i3c_xfers()
      https://git.kernel.org/i3c/c/256cc1f1305a
[2/2] i3c: dw: Simplify xfer cleanup with __free(kfree)
      https://git.kernel.org/i3c/c/6105f4919615

Best regards,

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com