Messages in this thread | | | From | Shunsuke Mie <> | Date | Wed, 7 Sep 2022 10:59:13 +0900 | Subject | Re: [RFC PATCH v2 1/2] misc: pci_endpoint_test: Aggregate params checking for xfer |
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2022年9月6日(火) 19:58 Greg Kroah-Hartman <gregkh@linuxfoundation.org>: > > On Tue, Sep 06, 2022 at 07:15:54PM +0900, Shunsuke Mie wrote: > > Each transfer test functions have same parameter checking code. This patch > > unites those to an introduced function. > > > > Signed-off-by: Shunsuke Mie <mie@igel.co.jp> > > --- > > Changes in v2: > > * New patch > > --- > > --- > > drivers/misc/pci_endpoint_test.c | 35 ++++++++++++++++++++++++++------ > > 1 file changed, 29 insertions(+), 6 deletions(-) > > > > diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c > > index 8f786a225dcf..3bd9f135cdac 100644 > > --- a/drivers/misc/pci_endpoint_test.c > > +++ b/drivers/misc/pci_endpoint_test.c > > @@ -332,6 +332,17 @@ static bool pci_endpoint_test_msi_irq(struct pci_endpoint_test *test, > > return false; > > } > > > > +static int pci_endpoint_test_validate_xfer_params(struct device *dev, > > + struct pci_endpoint_test_xfer_param *param, size_t alignment) > > +{ > > + if (param->size > SIZE_MAX - alignment) { > > + dev_err(dev, "Maximum transfer data size exceeded\n"); > > + return -EINVAL; > > + } > > + > > + return 0; > > +} > > + > > static bool pci_endpoint_test_copy(struct pci_endpoint_test *test, > > unsigned long arg) > > { > > @@ -363,9 +374,13 @@ static bool pci_endpoint_test_copy(struct pci_endpoint_test *test, > > return false; > > } > > > > + err = pci_endpoint_test_validate_xfer_params(dev, ¶m, alignment); > > + if (err) { > > + dev_err(dev, "Invalid parameter\n"); > > Also, you just printed 2 errors for the same error. Not needed. I see. I'll also change to using the dev_dbg() in the next version.
Thanks, Shunsuke
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