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[2.15.159.20]) by smtp.gmail.com with ESMTPSA id u20sm21991145wmm.15.2020.07.13.07.59.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Jul 2020 07:59:45 -0700 (PDT) From: Bartosz Golaszewski To: Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , Michal Simek , Greg Kroah-Hartman , Guenter Roeck , Andy Shevchenko Subject: [PATCH v4 0/3] devres: provide and use devm_krealloc() Date: Mon, 13 Jul 2020 16:59:31 +0200 Message-Id: <20200713145934.18243-1-brgl@bgdev.pl> X-Mailer: git-send-email 2.26.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200713_105949_292191_526F0995 X-CRM114-Status: GOOD ( 12.55 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:442 listed in] [list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 SPF_NONE SPF: sender does not publish an SPF Record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-iio@vger.kernel.org, Bartosz Golaszewski , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Bartosz Golaszewski Regular krealloc() obviously can't work with managed memory. This series implements devm_krealloc() and adds the first users with hope that this helper will be adopted by other drivers currently using non-managed krealloc(). Some additional changes to the code modified by main patches are included. v1 -> v2: - remove leftover call to hwmon_device_unregister() from pmbus_core.c - add a patch extending devm_kmalloc() to handle zero size case - use WARN_ON() instead of WARN_ONCE() in devm_krealloc() when passed a pointer to non-managed memory - correctly handle the case when devm_krealloc() is passed a pointer to memory in .rodata (potentially returned by devm_kstrdup_const()) - correctly handle ZERO_SIZE_PTR passed as the ptr argument in devm_krealloc() v2 -> v3: - drop already applied patches - collect Acks - add an additional user in iio v3 -> v4: - add the kerneldoc for devm_krealloc() - WARN() outside of spinlock - rename local variable Bartosz Golaszewski (3): devres: provide devm_krealloc() hwmon: pmbus: use more devres helpers iio: adc: xilinx-xadc: use devm_krealloc() .../driver-api/driver-model/devres.rst | 1 + drivers/base/devres.c | 67 +++++++++++++++++++ drivers/hwmon/pmbus/pmbus_core.c | 28 +++----- drivers/iio/adc/xilinx-xadc-core.c | 16 ++--- include/linux/device.h | 2 + 5 files changed, 87 insertions(+), 27 deletions(-)