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path: root/drivers/crypto/tegra
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2024-10-28crypto: tegra - remove unneeded crypto_engine_stop() callOvidiu Panait
The explicit crypto_engine_stop() call is not needed, as it is already called internally by crypto_engine_exit(). Signed-off-by: Ovidiu Panait <ovidiu.panait.oss@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2024-10-28crypto: tegra - remove redundant error check on retColin Ian King
Currently there is an unnecessary error check on ret without a proceeding assignment to ret that needs checking. The check is redundant and can be removed. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Acked-by: Akhil R <akhilrajeev@nvidia.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2024-10-19crypto: drivers - Switch back to struct platform_driver::remove()Uwe Kleine-König
After commit 0edb555a65d1 ("platform: Make platform_driver::remove() return void") .remove() is (again) the right callback to implement for platform drivers. Convert all platform drivers below drivers/crypto to use .remove(), with the eventual goal to drop struct platform_driver::remove_new(). As .remove() and .remove_new() have the same prototypes, conversion is done by just changing the structure member name in the driver initializer. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2024-05-31crypto: tegra - Remove an incorrect iommu_fwspec_free() call in ↵Christophe JAILLET
tegra_se_remove() The only iommu function call in this driver is a tegra_dev_iommu_get_stream_id() which does not allocate anything and does not take any reference. So there is no point in calling iommu_fwspec_free() in the remove function. Remove this incorrect function call. Fixes: 0880bb3b00c8 ("crypto: tegra - Add Tegra Security Engine driver") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Tested-by: Akhil R <akhilrajeev@nvidia.com> Acked-by: Akhil R <akhilrajeev@nvidia.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2024-04-26crypto: tegra - Fix some error codesDan Carpenter
Return negative -ENOMEM, instead of positive ENOMEM. Fixes: 0880bb3b00c8 ("crypto: tegra - Add Tegra Security Engine driver") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Akhil R <akhilrajeev@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2024-04-26crypto: tegra - Convert to platform remove callback returning voidUwe Kleine-König
The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Fixes: 0880bb3b00c8 ("crypto: tegra - Add Tegra Security Engine driver") Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Akhil R <akhilrajeev@nvidia.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2024-04-12crypto: tegra - Add Tegra Security Engine driverAkhil R
Add support for Tegra Security Engine which can accelerate various crypto algorithms. The Engine has two separate instances within for AES and HASH algorithms respectively. The driver registers two crypto engines - one for AES and another for HASH algorithms and these operate independently and both uses the host1x bus. Additionally, it provides hardware-assisted key protection for up to 15 symmetric keys which it can use for the cipher operations. Signed-off-by: Akhil R <akhilrajeev@nvidia.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>