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Miller" , Udit Tiwari , Md Sadre Alam , Dmitry Baryshkov , Manivannan Sadhasivam , Stephan Gerhold , Bjorn Andersson , Peter Ujfalusi , Michal Simek , Frank Li Cc: dmaengine@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, brgl@kernel.org, Bartosz Golaszewski , Bartosz Golaszewski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2295; i=bartosz.golaszewski@oss.qualcomm.com; h=from:subject:message-id; bh=l/BZlQy4Cse/CAATeumcy5CjMrSkTNNSb0kuuSiKbFs=; b=owEBbQKS/ZANAwAKAQWdLsv/NoTDAcsmYgBpzoNreZvKxHX2ktLtp9xgKe1u0M7uAOAZb9Hmk dvbJnr8s8iJAjMEAAEKAB0WIQSR5RMt5bVGHXuiZfwFnS7L/zaEwwUCac6DawAKCRAFnS7L/zaE wxJCD/0TEJo3Um1xN48bpRtM/BxOfyO8dsvr/AGw51z0xocaNg+6z15D8WcFcdI/6sdKxsxAyJq EYh5mFKuxJmjvhqr8gBNubTk+O5d8F+KReUI6kP2q+aaHkG38IEfnhi/RZuw55nQ/6kmZPqm0bD Wg+uJew51CjkL8PgOgjfiddGdiByC1+IHixZrhTUcfwz9oDS55PQIzACUTPL29zxVAEKCX2LetQ 3HMDOHEo1nu2idyv7ezsiajyNbHvT98/mF4zNFgL/nbsTOkonJPS49iy6760g9FzM0+Q8KflP7o pHy6AMy7foJPjum6TAPUr+j8dfp9BCckMQXNzt5loUnynLg8nlh7CQnqRpVnwhSmmbC/eG2A6RL 3Qv+7c8Uii7DJLCuSjlo7CisoiB2CNTE44wAunf2uhN0rL+zQr0QN5D8gQoH1tlIHxGwL79BATO PYE0KEFbQ2VOHdRwcbd9Lg1tVMOes2UBusq5eFLpegpf7Azmu+utN7Bzzqh0TzSTe9sNWirApRT LE2toexWRSr+jRTKnnp3oD8YnZ7YNzof9du0S0U+d7IDOuJnVtCyQCNvVOg/j0cci4MgT8R83px tbdhAw5MzcDb7mpAzBV0eVl2nMZw8VAHA3a8HuWlesL6zB2hbiXP7p/xQpUawUEAs+c/pPDGMA0 zkEpPtKl1I+Uy7A== X-Developer-Key: i=bartosz.golaszewski@oss.qualcomm.com; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDAyMDEzNCBTYWx0ZWRfXw6FxsI+kvwm3 kFq7Lnesk+eJaPtL4zQwebh1oVkReUhD1doMtEW/X66jFUeUFWbDAnPPQl7T+SyoPKQeMWEj5pq pE1nMd9dhQK4PSb6alnG6iFhmHzBAvuKbwLBzk1Fjl+vjFWflp4jN827BIayzZPhWTVQr6sexse +fL1o+rSXwG1LMMvZsOwKyMgeAp5xpF68mxxAyi7GAEW0WqgGon7Bz4N/EUwKbSDRT64krK/pXZ 3z7HkVo2MYaH7Z6hR7SXa/fWWO6NXS67mcjFk1RsdgLJO/8MqWSg4yT83HjrdaJpIwVAXxqEujK ZYtCNqM7QXldrMGUHM9oQiVlB0avLvDQaV22ohVJxKhftobgDJKt4rzEzzKZ7vLcgNaL5Lf0w3J ga1wwTfJaaI7yPvCISsTLjTt0UQimWaIKH50l4vwESFeUsnrT+4m+ARv7Vo7yTc2fEtXNUxE0ui 7Mqkn/gaue7uGnRPhJA== X-Authority-Analysis: v=2.4 cv=D5xK6/Rj c=1 sm=1 tr=0 ts=69ce837a cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=XeVHrwws4l7kqE2Ex6IA:9 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 X-Proofpoint-GUID: ayu4xhEpZKq7NYdwJ8Arwemm88miV4lT X-Proofpoint-ORIG-GUID: ayu4xhEpZKq7NYdwJ8Arwemm88miV4lT X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-02_02,2026-04-02_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 adultscore=0 priorityscore=1501 bulkscore=0 spamscore=0 phishscore=0 malwarescore=0 lowpriorityscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2604020134 There's no reason for the instances of this struct to be modifiable. Constify the pointer in struct dma_async_tx_descriptor and all drivers currently using it. Reviewed-by: Manivannan Sadhasivam Signed-off-by: Bartosz Golaszewski --- drivers/dma/ti/k3-udma.c | 2 +- drivers/dma/xilinx/xilinx_dma.c | 2 +- include/linux/dmaengine.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index c964ebfcf3b68d86e4bbc9b62bad2212f0ce3ee9..8a2f235b669aaf084a6f7b3e6b2= 3d06b04768608 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -3408,7 +3408,7 @@ static int udma_set_metadata_len(struct dma_async_tx_= descriptor *desc, return 0; } =20 -static struct dma_descriptor_metadata_ops metadata_ops =3D { +static const struct dma_descriptor_metadata_ops metadata_ops =3D { .attach =3D udma_attach_metadata, .get_ptr =3D udma_get_metadata_ptr, .set_len =3D udma_set_metadata_len, diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dm= a.c index e3a18ee42aa22f4a749416307b396a6191ce4bfc..d0d55156cd42eab1ed797bd64e8= 272edf00e1cad 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -653,7 +653,7 @@ static void *xilinx_dma_get_metadata_ptr(struct dma_asy= nc_tx_descriptor *tx, return seg->hw.app; } =20 -static struct dma_descriptor_metadata_ops xilinx_dma_metadata_ops =3D { +static const struct dma_descriptor_metadata_ops xilinx_dma_metadata_ops = =3D { .get_ptr =3D xilinx_dma_get_metadata_ptr, }; =20 diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 99efe2b9b4ea9844ca6161208362ef18ef111d96..92566c4c100e98f48750de21249= ae3b5de06c763 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -623,7 +623,7 @@ struct dma_async_tx_descriptor { void *callback_param; struct dmaengine_unmap_data *unmap; enum dma_desc_metadata_mode desc_metadata_mode; - struct dma_descriptor_metadata_ops *metadata_ops; + const struct dma_descriptor_metadata_ops *metadata_ops; #ifdef CONFIG_ASYNC_TX_ENABLE_CHANNEL_SWITCH struct dma_async_tx_descriptor *next; struct dma_async_tx_descriptor *parent; --=20 2.47.3