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fpga: zynqmp-fpga: Correctly handle error pointer

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Fixes the following static checker errors:

drivers/fpga/zynqmp-fpga.c:50 zynqmp_fpga_ops_write()
error: 'eemi_ops' dereferencing possible ERR_PTR()

drivers/fpga/zynqmp-fpga.c:84 zynqmp_fpga_ops_state()
error: 'eemi_ops' dereferencing possible ERR_PTR()

Note: This does not handle the EPROBE_DEFER value in a
      special manner.

Fixes commit c09f747112 ("fpga manager: Adding FPGA Manager support for
Xilinx zynqmp")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Acked-by: Alan Tull <atull@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Moritz Fischer 2019-05-30 09:52:59 -05:00 committed by Greg Kroah-Hartman
parent bd17cc5a20
commit 498ddaa3b4
1 changed files with 2 additions and 2 deletions
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4
drivers/fpga/zynqmp-fpga.c
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@ -47,7 +47,7 @@ static int zynqmp_fpga_ops_write(struct fpga_manager *mgr,
char *kbuf;
int ret;
if (!eemi_ops || !eemi_ops->fpga_load)
if (IS_ERR_OR_NULL(eemi_ops) || !eemi_ops->fpga_load)
return -ENXIO;
priv = mgr->priv;
@ -81,7 +81,7 @@ static enum fpga_mgr_states zynqmp_fpga_ops_state(struct fpga_manager *mgr)
const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
u32 status;
if (!eemi_ops || !eemi_ops->fpga_get_status)
if (IS_ERR_OR_NULL(eemi_ops) || !eemi_ops->fpga_get_status)
return FPGA_MGR_STATE_UNKNOWN;
eemi_ops->fpga_get_status(&status);