From: trix@redhat.com To: hao.wu@intel.com, mdf@kernel.org, michal.simek@xilinx.com Cc: linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Tom Rix <trix@redhat.com> Subject: [PATCH 1/7] fpga: wrap the write_init() op Date: Mon, 7 Jun 2021 10:23:56 -0700 [thread overview] Message-ID: <20210607172402.2938697-2-trix@redhat.com> (raw) In-Reply-To: <20210607172402.2938697-1-trix@redhat.com> From: Tom Rix <trix@redhat.com> The board should not be required to provide a write_init() op if there is nothing for it do. So add a wrapper and move the op checking. Default to success. Signed-off-by: Tom Rix <trix@redhat.com> --- drivers/fpga/fpga-mgr.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c index b85bc47c91a9..24547e36a56d 100644 --- a/drivers/fpga/fpga-mgr.c +++ b/drivers/fpga/fpga-mgr.c @@ -69,6 +69,14 @@ void fpga_image_info_free(struct fpga_image_info *info) } EXPORT_SYMBOL_GPL(fpga_image_info_free); +static int fpga_mgr_write_init(struct fpga_manager *mgr, + struct fpga_image_info *info, + const char *buf, size_t count) +{ + if (mgr->mops && mgr->mops->write_init) + return mgr->mops->write_init(mgr, info, buf, count); + return 0; +} /* * Call the low level driver's write_init function. This will do the * device-specific things to get the FPGA into the state where it is ready to @@ -83,9 +91,9 @@ static int fpga_mgr_write_init_buf(struct fpga_manager *mgr, mgr->state = FPGA_MGR_STATE_WRITE_INIT; if (!mgr->mops->initial_header_size) - ret = mgr->mops->write_init(mgr, info, NULL, 0); + ret = fpga_mgr_write_init(mgr, info, NULL, 0); else - ret = mgr->mops->write_init( + ret = fpga_mgr_write_init( mgr, info, buf, min(mgr->mops->initial_header_size, count)); if (ret) { @@ -569,7 +577,7 @@ struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name, int id, ret; if (!mops || !mops->write_complete || !mops->state || - !mops->write_init || (!mops->write && !mops->write_sg) || + (!mops->write && !mops->write_sg) || (mops->write && mops->write_sg)) { dev_err(dev, "Attempt to register without fpga_manager_ops\n"); return NULL; -- 2.26.3
WARNING: multiple messages have this Message-ID (diff)
From: trix@redhat.com To: hao.wu@intel.com, mdf@kernel.org, michal.simek@xilinx.com Cc: linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Tom Rix <trix@redhat.com> Subject: [PATCH 1/7] fpga: wrap the write_init() op Date: Mon, 7 Jun 2021 10:23:56 -0700 [thread overview] Message-ID: <20210607172402.2938697-2-trix@redhat.com> (raw) In-Reply-To: <20210607172402.2938697-1-trix@redhat.com> From: Tom Rix <trix@redhat.com> The board should not be required to provide a write_init() op if there is nothing for it do. So add a wrapper and move the op checking. Default to success. Signed-off-by: Tom Rix <trix@redhat.com> --- drivers/fpga/fpga-mgr.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c index b85bc47c91a9..24547e36a56d 100644 --- a/drivers/fpga/fpga-mgr.c +++ b/drivers/fpga/fpga-mgr.c @@ -69,6 +69,14 @@ void fpga_image_info_free(struct fpga_image_info *info) } EXPORT_SYMBOL_GPL(fpga_image_info_free); +static int fpga_mgr_write_init(struct fpga_manager *mgr, + struct fpga_image_info *info, + const char *buf, size_t count) +{ + if (mgr->mops && mgr->mops->write_init) + return mgr->mops->write_init(mgr, info, buf, count); + return 0; +} /* * Call the low level driver's write_init function. This will do the * device-specific things to get the FPGA into the state where it is ready to @@ -83,9 +91,9 @@ static int fpga_mgr_write_init_buf(struct fpga_manager *mgr, mgr->state = FPGA_MGR_STATE_WRITE_INIT; if (!mgr->mops->initial_header_size) - ret = mgr->mops->write_init(mgr, info, NULL, 0); + ret = fpga_mgr_write_init(mgr, info, NULL, 0); else - ret = mgr->mops->write_init( + ret = fpga_mgr_write_init( mgr, info, buf, min(mgr->mops->initial_header_size, count)); if (ret) { @@ -569,7 +577,7 @@ struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name, int id, ret; if (!mops || !mops->write_complete || !mops->state || - !mops->write_init || (!mops->write && !mops->write_sg) || + (!mops->write && !mops->write_sg) || (mops->write && mops->write_sg)) { dev_err(dev, "Attempt to register without fpga_manager_ops\n"); return NULL; -- 2.26.3 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-06-07 17:24 UTC|newest] Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-07 17:23 [PATCH 0/7] fpga: wrappers for fpga_manager_ops trix 2021-06-07 17:23 ` trix 2021-06-07 17:23 ` trix [this message] 2021-06-07 17:23 ` [PATCH 1/7] fpga: wrap the write_init() op trix 2021-06-07 22:36 ` Moritz Fischer 2021-06-07 22:36 ` Moritz Fischer 2021-06-08 6:23 ` Martin Hundebøll 2021-06-08 6:23 ` Martin Hundebøll 2021-06-08 19:05 ` Tom Rix 2021-06-08 19:05 ` Tom Rix 2021-06-08 13:55 ` Tom Rix 2021-06-08 13:55 ` Tom Rix 2021-06-07 17:23 ` [PATCH 2/7] fpga: make write_complete() op optional trix 2021-06-07 17:23 ` trix 2021-06-07 17:23 ` [PATCH 3/7] fpga: wrap the write() op trix 2021-06-07 17:23 ` trix 2021-06-07 17:23 ` [PATCH 4/7] fpga: wrap the status() op trix 2021-06-07 17:23 ` trix 2021-06-07 17:24 ` [PATCH 5/7] fpga: wrap the state() op trix 2021-06-07 17:24 ` trix 2021-06-07 17:24 ` [PATCH 6/7] fpga: wrap the fpga_remove() op trix 2021-06-07 17:24 ` trix 2021-06-07 17:24 ` [PATCH 7/7] fpga: collect wrappers and change to inline trix 2021-06-07 17:24 ` trix 2021-06-07 21:59 ` [PATCH 0/7] fpga: wrappers for fpga_manager_ops Moritz Fischer 2021-06-07 21:59 ` Moritz Fischer
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